| 1. |
- Alken, Jenny, et al.
(author)
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Rates of Extreme Neonatal Hyperbilirubinemia and Kernicterus in Children and Adherence to National Guidelines for Screening, Diagnosis, and Treatment in Sweden
- 2019
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In: JAMA Network Open. - : AMER MEDICAL ASSOC. - 2574-3805. ; 2:3
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Journal article (peer-reviewed)abstract
- IMPORTANCE Neonatal hyperbilirubinemia can cause lifelong neurodevelopmental impairment (kernicterus) even in high-resource settings. A better understanding of the incidence and processes leading to kernicterus may help in the design of preventive measures. OBJECTIVES To determine incidence rates of hazardous hyperbilirubinemia and kernicterus among near-term to term newborns and to evaluate health care professional adherence to best practices. DESIGN, SETTING, AND PARTICIPANTS This population-based nationwide cohort study used prospectively collected data on the highest serum bilirubin level for all infants born alive at 35 weeks' gestation or longer and admitted to neonatal care at all 46 delivery and 37 neonatal units in Sweden from 2008 to 2016. Medical records for newborns with hazardous hyperbilirubinemia were evaluated for best neonatal practices and for a diagnosis of kernicterus up to 2 years of age. Data analyses were performed between September 2017 and February 2018. EXPOSURES Extreme (serum bilirubin levels, 25.0-29.9mg/dL [425-509 mu mol/L]) and hazardous (serum bilirubin levels, >30.0mg/dL [>510 mu mol/L]) neonatal hyperbilirubinemia. MAIN OUTCOMES AND MEASURES The primary outcome was kernicterus, defined as hazardous neonatal hyperbilirubinemia followed by cerebral palsy, sensorineural hearing loss, gaze paralysis, or neurodevelopmental retardation. Secondary outcomeswere health care professional adherence to national guidelines using a predefined protocol with 10 key performance indicators for diagnosis and treatment as well as assessment of whether bilirubin-associated brain damage might have been avoidable. RESULTS Among 992 378 live-born infants (958 051 term births and 34 327 near-term births), 494 (320 boys; mean [SD] birth weight, 3505 [527] g) developed extreme hyperbilirubinemia (50 per 100 000 infants), 6.8 per 100 000 infants developed hazardous hyperbilirubinemia, and 1.3 per 100 000 infants developed kernicterus. Among 13 children developing kernicterus, brain injury was assessed as potentially avoidable for 11 children based on the presence of 1 or several of the following possible causes: untimely or lack of predischarge bilirubin screening (n = 6), misinterpretation of bilirubin values (n = 2), untimely or delayed initiation of treatment with intensive phototherapy (n = 1), untimely or no treatment with exchange transfusion (n = 6), or lack of repeated exchange transfusions despite indication (n = 1). CONCLUSIONS AND RELEVANCE Hazardous hyperbilirubinemia in near-term or term newborns still occurs in Sweden and was associated with disabling brain damage in 13 per million births. For most of these cases, health care professional noncompliance with best practices was identified, suggesting that a substantial proportion of these cases might have been avoided.
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| 2. |
- Andersson, Jonny K, 1972, et al.
(author)
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Misdiagnosed and maltreated scaphoid fractures – costly both for society and patients : A review of filed claims to the Swedish National Patient Insurance Company 2011–2018
- 2022
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In: EFORT Open Reviews. - 2396-7544. ; 7:2, s. 129-136
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Journal article (peer-reviewed)abstract
- • Misdiagnosed and maltreated scaphoid fractures filed to the Swedish National Patient Insurance Company (LÖF) 2011–2018 were analyzed in terms of complications and costs for society. All filed claims are database-registered (altogether 200 000 claims since 2000). This database was assessed in June 2019 through injury ICD10-SWE-diagnoses. Demographics, complications, complaints, corrective surgeries and costs were analyzed. The numbers of claims for scaphoid fractures were reviewed and compared with all claims. • There was a statistically significant trend towards decreasing numbers of notified scaphoid fracture cases during this time. This is not the case compared with the total annually notified injuries to LÖF during the same time, where we instead can see statistically significant increased numbers. • Median age for the 128 patients was 24 years. Men represented 76%. Seventy-eight of the 128 (61%) claims were judged as avoidable, compared with 42% in terms of all notified injuries. Pseudoarthrosis dominated as complication (n = 71). Total numbers of complications were 117, and 47 of the 78 patients had medical invalidity as a consequence. Up to six secondary corrective surgeries per patient were required. Complications and disabilities were more severe if patients needed more than one surgery. The total costs were calculated to €1 226 193. • Level of Evidence: LoE III, Therapeutic
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| 3. |
- Bartuma, Hammurabi, et al.
(author)
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Assessment of the clinical and molecular impact of different cytogenetic subgroups in a series of 272 lipomas with abnormal karyotype
- 2007
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In: Genes, Chromosomes and Cancer. - : Wiley. - 1045-2257 .- 1098-2264. ; 46:6, s. 594-606
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Journal article (peer-reviewed)abstract
- Conventional lipomas harbor karyotypic changes that could be subdivided into four, usually mutually exclusive, categories: rearrangement, in particular through translocations, of chromosome bands 12q13-15, resulting in deregulation of the HMGA2 gene, loss of material from or rearrangement of chromosome 13, supernumerary ring or giant marker chromosomes, and aberrations of chromosome band 6p21. In the present study, 272 conventional lipomas, two-thirds of them deep-seated, with acquired clonal chromosome changes were assessed with regard to karyotypic and clinical features. A nonrandom distribution of breakpoints and imbalances could be confirmed, with 83% of the cases harboring one or more of the previously known cytogenetic hallmarks. Correlation with clinical features revealed that lipomas with rings/giant markers were larger, occurred in older patients, were more often deep-seated, and seemed to have an increased tendency to recur locally, compared with tumors with other chromosome aberrations. The possible involvement of the HMGA2 gene in cases that did not show any of the characteristic cytogenetic changes was further evaluated by locus-specific metaphase fluorescence in situ hybridization (FISH) and RT-PCR, revealing infrequent cryptic disruption of the gene but abundant expression of full length or truncated transcripts. By FISH, we could also show that breakpoints in bands 10q22-23 do not affect the MYST4 gene, whereas breakpoints in 6p21 or 8q11-12 occasionally target the HMGA1 or PLAG1 genes, respectively, also in conventional lipomas.
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| 4. |
- Bauer, H C, et al.
(author)
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The Scandinavian Sarcoma Group Register 1986-2001.
- 2004
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In: Acta orthopaedica Scandinavica. Supplementum. - : Medical Journals Sweden AB. - 0300-8827 .- 0001-6470. ; 75:Supplement 311, s. 8-10
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Journal article (peer-reviewed)
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| 5. |
- Bauer, Hjärtcentrum, et al.
(author)
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Monitoring referral and treatment in soft tissue sarcoma : Study based on 1,851 patients from the Scandinavian Sarcoma Group Register
- 2001
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In: Acta Orthopaedica Scandinavica. - : Medical Journals Sweden AB. - 0001-6470. ; 72:2, s. 150-159
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Journal article (peer-reviewed)abstract
- This report is based on 1.851 adult patients with soft tissue sarcoma (STS) of the extremities or trunk wall diagnosed between 1986 and 1997 and reported from all tertiary referral centers in Norway and Sweden. The median age at diagnosis was 65 years and the male-to-female ratio was 1.1:1. One third of the tumors were subcutaneous, one third deep, intramuscular and one third deep, extramuscular. The median size was 7 (1-35) cm and 75% were high grade (III-IV). Metastases at presentation were diagnosed in 8% of the patients. Two thirds of STS patients were referred before surgery and the referral practices have improved during the study. The preoperative morphologic diagnosis was made with fine-needle aspiration cytology in 81%, core-needle biopsy in 9% and incisional biopsy in 10%. The frequency of amputations has decreased from 15% in 1986-88 to 9% in 1995-1997. A wide surgical margin was achieved in 77% of subcutaneous and 60% of deep-seated lesions. Overall, 24% of operated STS patients had adjuvant radiotherapy. The use of such therapy at sarcoma centers increased from 20% 1986-88 to 30% in 1995-97. Follow-up has been reported in 96% of the patients. The cumulative local recurrence rate was 0.20 at 5 years and 0.24 at 10 years. The 5-year metastasis-free survival rate was 0.70.
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| 6. |
- Bergqvist, David, et al.
(author)
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Erfarenheter av undvikbara skador vid kärlkirurgi
- 2020
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In: Läkartidningen. - : Läkartidningen Förlag AB. - 0023-7205 .- 1652-7518. ; 117
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Journal article (peer-reviewed)abstract
- Insurance claims after vascular surgery have been analyzed during two three-year periods. Ca 0.6 % of arterial operations and 0.3 % of venous operations have been claimed, 30 % and 40 % respectively having been economically compensated as they were judged avoidable. The increase in endovascular treatments has not influenced the pattern of claims.
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| 7. |
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| 8. |
- Bergqvist, David, et al.
(author)
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The Consequences of Negligence Claims in Arterial Surgery - An Analysis of Two Periods with an Increasing Use of Endovascular Treatment
- 2019
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In: European Journal of Vascular and Endovascular Surgery. - : W B SAUNDERS CO LTD. - 1078-5884 .- 1532-2165. ; 58:5, s. 771-776
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Journal article (peer-reviewed)abstract
- Objectives: Patient treatment within the Swedish medical service system can claim negligence injuries to the malpractice insurance review board and request financial compensation. The aim of this paper was to analyse the consequences of a negligence claim after arterial surgery between two periods with increasing use of endovascular treatment.Methods: This was a retrospective cohort study of the arterial surgery negligence claims from two three year periods 2005-2007 (Period A) and 2012-2014 (Period B) from the County Council's Mutual Insurance Company. The analysis was restricted to aortic, carotid, and lower limb arterial diseases. The magnitude of surgery for vascular diseases was obtained from the Swedish vascular register (Swedvasc).Results: The number of patients undergoing arterial procedures increased from 16 628 to 20 709 (p = .01). There was an increase of 54% in the number of negligence claims between the periods. In Period A, the number of compensated claims was 22 out of 83 (29%) and in Period B 60 out of 151 (41%) (p = .06). Patients treated for aortic disorders and peripheral arterial surgery received compensation with increasing frequency whereas carotid diseases decreased. Claimants treated for aortic disorders were compensated in four out of 23 (17%) and 21 out of 54 (39%) in the two periods (p = .07), and after lower limb arterial surgery in six out of 34 (18%) and in 24 out of 71 (34%) (p = .09). After carotid surgery the corresponding figures were 12 out of 26 (46%) and 14 out of 25 (46%) (p = .48). The increasing use of endovascular procedures (but not in carotid artery surgery) did not seem to influence the pattern of negligence claims.Conclusions: Between the two three year periods there has been an increase in negligence claims but not in compensated ones. The increased use of endovascular procedures has not influenced the pattern of compensated negligence claims.
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| 9. |
- Domanski, Henryk A, et al.
(author)
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Core-needle biopsy performed by the cytopathologist : a technique to complement fine-needle aspiration of soft tissue and bone lesions
- 2005
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In: Cancer. - : Wiley. - 1097-0142 .- 0008-543X. ; 105:4, s. 229-239
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Journal article (peer-reviewed)abstract
- BACKGROUND: Fine-needle aspiration cytology (FNAC) is gaining increased popularity in the diagnosis of musculoskeletal lesions; and, in many patients, a definitive diagnosis can be rendered from aspiration smears alone. The main limitation of FNAC of soft tissue and bone neoplasms is in the evaluation of tissue architecture. In addition cytologic specimens are not always adequate for ancillary studies.METHODS: A consecutive series of 130 patients with soft tissue and bone lesions was examined by core-needle biopsy (CNB) performed by a cytopathologist in conjunction with FNAC. The findings of this combined diagnostic approach were compared with histologic diagnoses made on surgical biopsies and resected specimens from 86 patients. Adequate follow-up was available in all patients.RESULTS: FNAC combined with CNB correctly could identify 77 of 78 malignant lesions and 50 of 52 benign lesions. Only seven patients underwent incisional biopsy. The tumor subtype was determined correctly in 30 of 39 patients (77%) and the malignancy grade was determined in 35 of 39 patients (90%) with primary soft tissue and bone sarcomas compared with the biopsy or operative specimens.CONCLUSIONS: FNAC of musculoskeletal tumors/lesions complemented with CNB combined cytomorphology with tissue architecture and ancillary procedures. In the current study, obtaining FNAC as well as CNB at the same clinic visit and by the cytopathologist made preliminary diagnosis on the day of referral possible. This speeded diagnosis increased the number of correct diagnoses and usually enabled correct subtyping and malignancy grading of sarcomas.
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| 10. |
- Domanski, Henryk A, et al.
(author)
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Fine-needle aspiration of neurilemoma (schwannoma). A clinicocytopathologic study of 116 patients
- 2006
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In: Diagnostic Cytopathology. - : Wiley. - 8755-1039 .- 1097-0339. ; 34:6, s. 403-412
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Journal article (peer-reviewed)abstract
- The preoperative fine-needle aspiration cytology (FNAC) diagnoses in 116 surgically excised neurilemomas were reviewed and compared with the corresponding histopathologic diagnoses made on surgical specimens and with clinical data. In addition, the utility of adjunctive techniques was analyzed and other spindle-cell lesions in the differential diagnoses were discussed. An unequivocal, benign diagnosis was rendered by FNAC in 80 cases, 67 of which were correctly labelled as neurilemoma in a review of the original cytology reports. There were 6 false-positive malignant diagnoses while 23 smears were considered insufficient and 7 inconclusive as to whether benign or malignant. On reevaluation, the diagnostic smears in most cases contained spindle cells with wavy nuclei embedded in a fibrillar, occasionally collagenous, and/or myxoid matrix and Antoni A/Antoni B tissue fragments. A moderate to abundant admixture of round to oval cells was also frequent. Nuclear palisading was seen in 41 smears with distinctive Verocay bodies in 10. Markedly pleomorphic nuclei were seen in smears from 8 ancient and 6 conventional neurilemomas, and slight to moderate nuclear pleomorphism was observed in 38 additional cases. Thus most neurilemomas have distinct cytomorphologic features that allow correct diagnosis. The major problem in FNAC of neurilemoma is to obtain sufficient material. Furthermore aspirates showing predominantly Antoni A features, nuclear pleomorphism, and/or myxoid changes can easily be confused with other types of benign or malignant soft-tissue tumors.
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| 11. |
- Domanski, Henryk, et al.
(author)
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Cytologic features of primary, recurrent, and metastatic dermatofibrosarcoma protuberans
- 2002
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In: Cancer. - : Wiley. - 1097-0142 .- 0008-543X. ; 96:6, s. 351-361
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Journal article (peer-reviewed)abstract
- BACKGROUND: Dermatofibrosarcoma protuberans (DFSP) is a low-grade spindle cell neoplasm involving both dermis and subcutis. Its diagnosis may be difficult to render from cytologic smears, as it shares some features with other spindle cell lesions occurring in the skin and soft tissue.METHODS: Fourteen aspiration smears from 12 patients with primary, recurrent, or metastatic DFSP, examined by fine-needle aspiration biopsy (FNAB), were reviewed and compared with corresponding surgical specimens (13 aspirates) and clinical data (one aspirate). The cytologic features of DFSP were evaluated. Other spindle cell lesions in the differential diagnoses were discussed.RESULTS: Unequivocal spindle cell sarcoma diagnoses were rendered in nine aspirates, six of which were labeled correctly as DFSP in the original reports. In three aspirates, the preoperative diagnoses were inconclusive with regard to whether the tumors were benign or malignant. Two aspirates were diagnosed erroneously as benign spindle cell lesions. Cytologic features included tight clusters of bland spindle cells embedded in a collagenous/fibrillar and, often, metachromatic matrix along with dissociated, uniform, or slightly atypical spindle cells or bare nuclei. Tissue fragments showing a storiform pattern and entrapped fat tissue, reported in previous series, were less characteristic, presenting in nine and seven aspirates, respectively.CONCLUSIONS: Correct subtyping of DFSP in fine-needle aspiration smears can be difficult, due to its morphologic overlapping with other spindle cell lesions. A combination of cytology with ancillary studies and appropriate clinical information is crucial to establishing a correct diagnosis.
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| 12. |
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| 13. |
- Dreinhofer, KE, et al.
(author)
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DNA ploidy in soft tissue sarcoma: Comparison of flow and image cytometry with clinical follow-up in 93 patients : comparison of flow and image cytometry with clinical follow-up in 93 patients
- 2002
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In: Cytometry. - : Wiley. - 0196-4763. ; 50:1, s. 19-24
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Journal article (peer-reviewed)abstract
- In soft tissue sarcoma, the prognostic importance of DNA ploidy status is limited. One possible explanation may be technical; small nondiploid stemlines will he diluted in relation to the presence of normal diploid cells and may not be detected by flow cytometry (FCM). We assessed DNA ploidy status in 93 tumors with both FCM and image cytometry (ICM). ICM may permit the exclusion of nonrelevant cells. The ability of the two methods to detect nondiploid stemlines was compared, as were the prognostic consequences. The patients (54 males) had a median age of 69 years. Surgical procedures were performed on all patients. None of the patients had received preoperative radiotherapy or chemotherapy. FCM and ICM were performed with standard methods. The prognostic value was assessed with univariate and multivariate analysis. In 82 of the 93 tumors, a concordant ploidy status by FCM and ICM was found. In 5 FCM type 1-2 tumors (diploid), the identification of nondiploid stemlines by ICM did not influence the metastatic rates. Increasing tumor size, histotype other than liposarcoma, increasing malignancy grade, tumor necrosis, and ICM nondiploidy were univariate prognostic factors for metastasis. In a multivariate analysis, only tumor size larger than 9 cm was a prognostic factor. In about 10% of the tumors, a discrepancy between FCM and ICM ploidy status was found, but we could not find a consistent prognostic consequence of this. Neither FCM nor ICM ploidy status was an independent prognostic factor. (C) 2002 Wiley-Liss, Inc.
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| 14. |
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| 15. |
- Engellau, Jacob, et al.
(author)
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Time dependence of prognostic factors for patients with soft tissue sarcoma : a Scandinavian Sarcoma Group Study of 338 malignant fibrous histiocytomas
- 2004
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In: Cancer. - : Wiley. - 1097-0142 .- 0008-543X. ; 100:10, s. 2233-2239
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Journal article (peer-reviewed)abstract
- BACKGROUND: Prognostic factors for metastasis in soft tissue sarcoma govern decisions regarding adjuvant treatment. However, the significance of initial tumor-related prognostic factors over time is largely unknown.METHODS: The current study included 338 patients with malignant fibrous histiocytoma (MFH) of the extremities or the trunk wall whose tumors were reviewed by the Scandinavian Sarcoma Pathology Review Group. Of these 338 patients, 329 (97%) had high-grade tumors. The median follow-up period was 7 years. Metastases occurred in 110 of 338 of patients after a median follow-up period of 14 months, with roughly one-third (32 of 110) occurring after 2 years. The authors investigated the prognostic significance of tumor size, tumor depth, histologic grade, microscopic tumor necrosis, vascular invasion, mitotic rate, and local tumor recurrence at various time intervals using metastases as an endpoint.RESULTS: On univariate analysis, all investigated factors were found to be correlated with metastases for the entire follow-up period and also for the first 2 years of follow-up; beyond this time point, only size, tumor depth, and local recurrence were significant. On multivariate analysis, necrosis and local tumor recurrence were significant for the entire follow-up duration and also for the first 2 years of follow-up, whereas only tumor depth and local recurrence were significant beyond 2 years of follow-up. For all initial factors, the annual metastasis risks in the high-risk and low-risk groups converged to < 0.1 after 2 years and to near 0 after 5 years.CONCLUSIONS: Prognostic factors for metastasis in MFH were time dependent. The predictive value of the initial prognostic factors was limited to the first 2 years of follow-up. The lack of observed prognostic value beyond 2 years of follow-up probably was attributable to heterogeneity within risk categories as a result of measurement errors and unknown biologic variations.
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| 16. |
- Engström, Katarina, 1956, et al.
(author)
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Liposarcoma: outcome based on the Scandinavian Sarcoma Group register.
- 2008
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In: Cancer. - : Wiley. - 0008-543X .- 1097-0142. ; 113:7, s. 1649-56
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Journal article (peer-reviewed)abstract
- BACKGROUND: The aim was to study the clinicopathological characteristics, treatment, and outcome of liposarcoma in an unselected, population-based patient sample, and to establish whether treatment was according to the Scandinavian Sarcoma Group (SSG) treatment guidelines. METHODS: The SSG Pathology Board reviewed 319 liposarcoma cases reported between 1986 and 1998. After the review, 237 patients without metastasis were analyzed for local recurrence rate in relation to surgical margins, radiotherapy, occurrence of metastasis, and survival. RESULTS: Seventy-eight percent of the patients were primarily operated on at a sarcoma center, 45% with wide margins. All patients operated on outside the center had nonwide margins. Low-grade lesions constituted 67% of cases. Despite nonwide surgery, only 58% of high-grade lesions were treated with postoperative radiotherapy. The risk of local recurrence after nonwide surgery, without irradiation, was 47% for high-grade lesions. The estimated 10-year, local recurrence-free and metastasis-free survival in the low-grade group was 87% and 95%, respectively. In the high-grade group, it was 75% and 61%, respectively. Independent adverse prognostic factors for local recurrence were surgery outside a sarcoma center and histological type dedifferentiated liposarcoma. For metastases, they were old age, large tumor size, high grade, and histological type myxoid liposarcoma with a round cell component. Radiotherapy showed significant effect on local recurrence rate for the same grade and margin. CONCLUSIONS: Patients with liposarcoma should be treated at specialized centers. Postoperative radiotherapy decreases the local recurrence rate. To maintain quality and provide support for further trials, reporting to quality registers is crucial.
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| 17. |
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| 18. |
- Fletcher, Christopher D.M., et al.
(author)
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Clinicopathologic re-evaluation of 100 malignant fibrous histiocytomas: prognostic relevance of subclassification
- 2001
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In: Journal of Clinical Oncology. - 1527-7755. ; 19:12, s. 3045-3050
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Journal article (peer-reviewed)abstract
- PURPOSE: Malignant fibrous histiocytoma (MFH) has been regarded as the most common soft tissue sarcoma (STS) in adults. Yet its true nature and the validity of this diagnostic concept have increasingly been questioned. Available data suggest that most patients with MFH can be subclassified into specific STS types, but the clinical relevance of such categorization has been argued. In a retrospective study, we reclassified 100 tumors of the extremity and trunk wall primarily diagnosed as MFH and analyzed the outcome. PATIENTS AND METHODS: Patients were adults (median age, 70 years; range, 32 to 94 years). The median tumor size was 8 cm (range, 1 to 30 cm), and the thigh was the most common tumor location (n = 31). Median follow-up was 8 years (range, 3 to 16 years). The overall 5-year metastasis-free survival rate was 0.64. The tumors were reanalyzed histologically, immunohistochemically, and, where available, ultrastructurally, and were classified according to strict diagnostic criteria. Patients were staged according to the American Joint Committee on Cancer system, and prognoses were compared among different groups of the reclassified diagnoses, paying special attention to myogenic tumors. RESULTS: In 84 of 100 tumors, a specific line of differentiation was either proved or strongly suggested. The most common diagnoses were myxofibrosarcoma (n = 22) and leiomyosarcoma (n = 20). Overall, 30 tumors could be grouped as some form of myogenic sarcoma. These tumors had a worse prognosis, even within the same American Joint Committee on Cancer stage, and a shorter time to metastasis than nonmyogenic tumors. CONCLUSION: This retrospective study confirms that most so-called MFH can be subclassified by defined criteria; it provides evidence that such classification is clinically important. Specifically, pleomorphic STS showing myogenic differentiation are significantly more aggressive, a finding that allows planning future therapeutic trials.
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| 19. |
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| 20. |
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| 21. |
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| 22. |
- Gustafson, Pelle, et al.
(author)
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Flow cytometric S-phase fraction in soft-tissue sarcoma: prognostic importance analysed in 160 patients
- 1997
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In: British Journal of Cancer. - 1532-1827. ; 75:1, s. 94-100
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Journal article (peer-reviewed)abstract
- We could determine the S-phase fraction (SPF) by flow cytometric DNA analysis of paraffin archival material in 160 of 260 patients with soft-tissue sarcoma of extremity and trunk wall. The prognostic value of SPF was compared with other clinicopathological factors. The median follow-up time was 16 (6-31) years. In a univariate analysis, deep tumour location, increasing tumour size and histological malignancy grade, microscopic tumour necrosis, vascular invasion, DNA non-diploidy and high SPF (>3.0%) were associated with poor metastasis-free survival. In a multivariate analysis, microscopic tumour necrosis and high SPF were independently prognostic for metastasis. Used in combination with tumour size, microscopic tumour necrosis and vascular invasion, SPF could identify a group of patients with a 5-year metastasis-free survival rate of 0.97. This group constituted one-quarter of all patients. Patients with low SPF who did recur had a prolonged clinical course both as regards metastases and local recurrence. We conclude that SPF is a valuable adjunct in prognostication in soft-tissue sarcoma.
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| 23. |
- Gustafson, Pelle, et al.
(author)
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Liposarcoma: a population-based epidemiologic and prognostic study of features of 43 patients, including tumor DNA content
- 1993
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In: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 55:4, s. 541-546
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Journal article (peer-reviewed)abstract
- Different conceptions exist regarding the epidemiology and prognosis of liposarcoma, and several classification systems are in use. We analyzed a population-based, 25-year series of 43 patients with liposarcoma of the extremity or trunk wall. Follow-up was complete. The annual incidence was 0.12/10(5). The thigh was the most common location. One of 6 tumors was subcutaneous. Deep-seated tumors were larger than s.c. tumors. Among the 42 surgically treated patients, grade II (4-grade scale) was the most common malignancy grade. Four tumors were well-differentiated, 24 were predominantly myxoid, 4 predominantly round-cell, and 10 were predominantly of pleomorphic type. The 5-year metastasis-free survival rate was 69%. By univariate analysis increasing malignancy grade, tumor necrosis, vascular invasion, mitotic count, subtype other than well-differentiated, and high cellularity were prognostic for metastatic disease. However, in the multivariate analysis only tumor necrosis was an independent risk factor. Tumor necrosis should be considered when prognosis of liposarcoma of the extremity and trunk wall is evaluated.
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| 24. |
- Gustafson, Pelle, et al.
(author)
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Prognostic implications of various models for calculation of S-phase fraction in 259 patients with soft tissue sarcoma
- 1999
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In: British Journal of Cancer. - : Springer Science and Business Media LLC. - 1532-1827 .- 0007-0920. ; 79, s. 1205-1209
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Journal article (peer-reviewed)abstract
- The S-phase fraction (SPF) in flow cytometric DNA histograms in soft tissue sarcoma (STS) can be calculated in various ways. The traditional planimetric method of Baisch has been shown to be prognostic, but is hampered by a failure rate of around 40%. We therefore tested other models to see if this rate could be decreased with retained prognostic value. In 259 STS of the locomotor system the SPF was calculated according to Baisch and with commercial parametric MultiCycle software using different corrections for background. Using the Baisch model, 159 histograms could be evaluated for SPF. The 5-year metastasis-free survival rate (MFSR) was 0.94 for the low-risk group (defined with SPF), and 0.53 for the high-risk group. In the low-risk group, four of the seven patients who developed metastasis did so after 5 years Using the MultiCycle software, SPF could be calculated in 253 tumours. Depending on type of background correction used, the 5-year MFSR varied between 0.67 and 0.82 for the low-risk group, and between 0.47 and 0.53 for the high-risk group. The late metastasis pattern in the low-risk group was never seen using the MultiCycle software. We conclude that in paraffin archival material, calculation of SPF according to Baisch is preferable in clinical use due to better separation between low-risk and high-risk groups, and also the possibility to identify patients who metastasize late.
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| 25. |
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| 26. |
- Gustafson, Pelle, et al.
(author)
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Soft tissue leiomyosarcoma. A population-based epidemiologic and prognostic study of 48 patients, including cellular DNA content
- 1992
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In: Cancer. - 1097-0142. ; 70:1, s. 114-119
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Journal article (peer-reviewed)abstract
- BACKGROUND. Leiomyosarcoma of soft tissue is a rare tumor. There are different opinions regarding epidemiology and prognosis. METHODS. Epidemiology and prognosis were analyzed in a consecutive, population-based series of 48 patients with subcutaneous and deep-seated leiomyosarcoma in the extremities and trunk wall with a complete follow-up of a minimum of 3 years. Cutaneous tumors were not included. RESULTS. The annual incidence was 0.13/10(5). The ratio of men to women was 1.2, and the median age was 65 years. The thigh was the most common location. Almost half of the tumors were subcutaneous. The median tumor size was 6 cm (range, 1-25 cm). All patients were treated with surgery, and in 19 cases it was combined with adjuvant radiation therapy or chemotherapy. The cumulative 5-year survival rate was 64%. Multivariate analysis indicated that age of 60 years or greater (relative risk [RR] = 8) and intratumoral vascular invasion (RR = 4) were independent risk factors for death resulting from tumor. DNA aneuploidy (RR = 4) and tumor necrosis (RR = 3) were associated with poor prognosis, but did not reach statistic significance. CONCLUSIONS. Advanced age, vascular invasion, and DNA aneuploidy could be used to identify prognostic subgroups.
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| 27. |
- Gustafson, Pelle, et al.
(author)
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Säkrare svensk sjukvård kräver sammanhållet och uthålligt arbete
- 2015
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In: Läkartidningen. - : Elsevier. - 0023-7205 .- 1652-7518. ; 112:25-26
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Research review (peer-reviewed)abstract
- Despite a development in Swedish patient safety work in recent years, unambiguous results are missing. Here we propose some activities that will result in improved patient safety. Patients and employees are a strong driving force, and should be given a more important role. The level of education in patient safety must be raised in all levels in the system. Efective systems for learning, sharing and follow-up need to be reinforced. The understanding on how the health-care system adapts to varying circumstances, resilience, needs development. The knowledge basis of what constitutes and creates safety in psychiatry, paediatric care, primary care, and in care of the elderly must be developed.
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| 28. |
- Gustafson, Pelle, et al.
(author)
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Tio år med WHO:s checklista för säker kirurgi [Ten years with the WHO Checklist for Safe Surgery] : Nu kommer den nya svenska versionen – checklistan 2.0 [A new Swedish version is soon to be introduced]
- 2018
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In: Läkartidningen. - Stockholm, Sweden : Läkartidningen Förlag AB. - 0023-7205 .- 1652-7518. ; 115
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Journal article (peer-reviewed)abstract
- The WHO Checklist for Safe Surgery has been in use in Swedish healthcare since 2009. Based on national and international experiences, we have developed the original checklist, with the aim to keep its strengths and remove the weaknesses. The most obvious difference is that each section of the original checklist has been split into a pure checklist and corresponding instructions. It is now also more obvious that the basis for the checklist is local guidelines/routines. It is primarily via these local guidelines/routines that local adaptations can be made. The new checklist has been tested and gradually improved during six rounds at large and small Swedish hospitals, where comments from staff have been considered. The name has been changed to Checklist for Safe Surgery 2.0, and distribution to all Swedish hospitals will commence in the early autumn of 2018.
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| 29. |
- Mandahl, Nils, et al.
(author)
-
Cytogenetic aberrations and their prognostic impact in chondrosarcoma
- 2002
-
In: Genes, Chromosomes and Cancer. - : Wiley. - 1045-2257. ; 33:2, s. 188-200
-
Journal article (peer-reviewed)abstract
- Chondrosarcoma is the second most common primary malignancy of bone. Cytogenetic data are available from close to 100 cases, including all subtypes of chondrosarcoma. Specific chromosomal rearrangements have been identified only in extraskeletal myxoid chondrosarcoma (EMC). Strong prognostic factors are largely missing, although size and, in particular, histologic tumor grade have been implicated. In the present study, we investigated the genomic aberrations in 59 chondrosarcomas (six grade 1, 24 grade 2, and 29 grade 3, including dedifferentiated tumors), excluding EMC, by chromosome banding analysis and DNA flow cytometry and correlated the findings with clinical outcome. Hyperhaploid to near-diploid karyotypes were found in half of the cases, and there was a good correlation between cytogenetics and flow cytometry data; discrepancies were seen primarily in cases with normal karyotypes and in those with -Y as the sole anomaly. Abnormal karyotypes, excluding those with -Y as the only change, were found in 36 cases. No recurrent structural aberration was found, but a nonrandom pattern of aberrations was seen. Total or partial gains and losses were the dominant karyotypic features. Genomic imbalances found in at least 10 cases included -1p36, -1p13-p22, -4, -5q13-q31, -6q22-qter, +7p13-pter, -9p22-pter, -10p, -10q24-qter, -11p13-pter, -11q25, +12q15-qter, -13q21-qter, -14q24-qter, -18p, -18q22-qter, +19, +20pter-q11, +21q, and -22q13. At the latest follow-up, 19 patients had experienced distant metastases, and the 5-year metastasis-free survival rate was 0.69. By univariate analysis, malignancy grade and loss of material from 6q, 10p, 11p or 11q, 13q, and 22q were associated with impaired metastasis-free survival. Only -13q was an independent prognostic factor for metastasis, regardless of tumor grade or size.
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| 30. |
- Mertens, Fredrik, et al.
(author)
-
Prognostic significance of chromosome aberrations in high-grade soft tissue sarcomas
- 2006
-
In: Journal of Clinical Oncology. - 1527-7755. ; 24:2, s. 315-320
-
Journal article (peer-reviewed)abstract
- Purpose To investigate whether previously observed correlations between tumor karyotype and risk of metastases could be reproduced in an independent set of high-grade soft tissue sarcomas (STSs). Patients and Methods In a previous study on high-grade STSs with clonal chromosome aberrations, we identified a number of cytogenetic variables, besides tumor grade and size, that were associated with significantly increased risk of metastases. In the present study, we have tested the predictive value of these cytogenetic variables in a new set of 156 high-grade STSs, all located in the extremities or trunk wall. Results Of the 10 cytogenetic variables that turned out to provide prognostic information in the previous series, encompassing 122 trunk wall or extremity STSs, three were significantly associated with metastases also in the new series. In a final Cox regression analysis including these three cytogenetic variables, as well as tumor grade and size, on the combined series of 278 high-grade STSs, four parameters were found to be significantly associated with metastasis risk: tumor grade 3, tumor size >= 5 cm, breakpoint in region 1p1, and gain of region 6p1. Conclusion Our findings suggest that independent prognostic information may be gained from cytogenetic analysis of high-grade STS.
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| 31. |
- Nilsson, Johan E, et al.
(author)
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Surgery for metastatic lesions of the femur: Good outcome after 245 operations in 216 patients
- 2008
-
In: Injury. - : Elsevier BV. - 1879-0267 .- 0020-1383. ; 39:4, s. 404-410
-
Journal article (peer-reviewed)abstract
- We report our experience with surgery for femoral metastatic lesions, based on 216 patients who underwent a total of 245 operations for femoral metastatic lesions. The median age was 66 (30-94) years, and the most common diagnosis breast cancer, followed by prostate cancer. All patients had pain on weight bearing, 196 had pain at rest, 147 were unable to walk preoperatively, and 148 were confined to a health-care facility. The patients were operated with bipolar hip prosthesis (n=7), total hip replacement (THR) with Harrington reconstruction of the acetabulum (n=42), ordinary THR (n=108), intramedullary nailing (n=55), and other techniques (n=33). All patients improved as regards pain at rest, pain on weight bearing, walking ability and social independence. The median survival for the 216 patients was 6 (0-123) months. All in all, 47 operations were followed by complications of any kind, where dislocations of hip prostheses and implant breakdown were the commonest, but pulmonary embolism the most serious. Patients with femoral metastatic lesions can be operated safely and with acceptable complication rates. Furthermore, large and long-standing gains as regards pain control and mobility can be expected.
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| 32. |
- Norman, Mikael, et al.
(author)
-
Prevalence of Severe Visual Disability Among Preterm Children With Retinopathy of Prematurity and Association With Adherence to Best Practice Guidelines
- 2019
-
In: JAMA Network Open. - : American Medical Association (AMA). - 2574-3805. ; 2:1, s. 186801-186801
-
Journal article (peer-reviewed)abstract
- Importance: Retinopathy of prematurity (ROP) can cause severe visual disability even in high-resource settings. A better understanding of the prevalence and processes leading to ROP-induced severe visual impairment may help health care professionals design preventive measures.Objectives: To determine the prevalence of severe visual disability among children born preterm in Sweden, evaluate adherence to best practice, and determine the health system's structural capacity.Design, Setting, and Participants: Population-based, nationwide cohort study of 1 310 227 children born between January 1, 2004, and December 31, 2015, in Sweden, of whom 17 588 (1.3%) were born very preterm (<32 weeks of gestation). Children born preterm with a verified diagnosis of severe visual disability had their medical records reviewed for evaluation of ROP screening, diagnosis, and treatment. In addition, a questionnaire on structural capacity was sent to all ophthalmology departments.Exposures: Stages 4 and 5 ROP.Main Outcomes and Measures: The primary outcome was prevalence of severe visual disability (visual acuity ≤20/200 for both eyes) associated with ROP stages 4 and 5. Secondary outcomes included adherence to national ROP guidelines using a predefined protocol with 15 key performance indicators for screening, diagnosis, and treatment; assessment of whether visual disability was deemed avoidable; and examination of structural capacity, including information on equipment and facilities, staffing, and patients.Results: Seventeen children (10 boys; mean [range] birth weight, 756 [454-1900] g; mean [range] gestational age, 25 [22-33] weeks) became severely visually disabled because of ROP, corresponding to a prevalence of 1 in 1000 very preterm infants (<32 weeks of gestational age) and 1 in 77 000 for all live births. Severe visual impairment was considered potentially avoidable in 11 of 17 affected children (65%) owing to untimely or no screening, missed diagnosis, or untimely and suboptimal treatment. Large variations in infrastructure (facilities, guidelines, staffing, and annual patient numbers) were also identified as potential contributors to these findings.Conclusions and Relevance: Retinopathy of prematurity still causes severe visual disability in Sweden, resulting in 1 affected infant per 1000 very preterm births. In most of these infants, noncompliance with best practice was identified, indicating that a significant proportion could have been avoided.
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| 33. |
- Panagopoulos, I, et al.
(author)
-
Clinical impact of molecular and cytogenetic findings in synovial sarcoma
- 2001
-
In: Genes, Chromosomes and Cancer. - : Wiley. - 1045-2257. ; 31:4, s. 72-362
-
Journal article (peer-reviewed)abstract
- Synovial sarcoma is an aggressive soft-tissue tumor that accounts for up to 10% of soft-tissue sarcomas. Cytogenetically, synovial sarcoma is characterized by the t(X;18)(p11;q11), found in more than 95% of the tumors. This translocation results in rearrangements of the SYT gene in 18q11 and one of the SSX1, SSX2, or SSX4 genes in Xp11, creating a SYT/SSX1, SYT/SSX2, or SYT/SSX4 chimeric gene. It has been shown that patients with SYT/SSX1 fusion genes have a shorter metastasis-free survival than do patients with SYT/SSX2. Previous studies have also suggested that clonal evolution may be associated with disease progression. In the present study, RT-PCR analysis showed that all 64 examined synovial sarcomas from 54 patients had SYT-SSX chimeric genes. SYT/SSX1 was found in 40 tumors from 33 patients, SYT/SSX2 in 23 tumors from 20 patients, and SYT/SSX4 in one case. Two patients had variant SYT/SSX2 transcripts, with 57 bp and 141 bp inserts, respectively, between the known SYT and SSX2 sequences. Patients with tumors with SYT/SSX1 fusions had a higher risk of developing metastases compared to those with SYT/SSX2 fusions (P = 0.01). The reciprocal transcripts SSX1/SYT and SSX2/SYT were detected using nested PCR in 11 of the 40 samples with SYT/SSX1 and 5 of the 23 samples with SYT/SSX2, respectively. Among 20 blood samples, SYT/SSX1 and SYT/SSX2 were detected in one sample each. The t(X;18), or variants thereof, was found cytogenetically in all patients but three. Among 32 primary tumors, the t(X;18) or a variant translocation was the sole anomaly in 10. In contrast, of the seven metastatic lesions that were investigated prior to radiotherapy, only one had a t(X;18) as the sole anomaly; all other tumors displayed complex karyotypes. Cytogenetic complexity in primary tumors was, however, not associated with the development of metastases. Tumors with SYT/SSX2 less often (4/12 vs. 7/15) showed complex karyotypes than did tumors with SYT/SSX1, but the difference was not significant. Combining cytogenetic complexity and transcript data, we found that the subgroup of patients with tumors showing simple karyotypes and SYT/SSX2 fusion had the best clinical outcome (2/8 patients developed metastases), and those with tumors showing complex karyotypes together with SYT/SSX1 fusion the worst (6/7 patients developed metastases). This corresponded to 5-year metastasis-free survival rates of 0.58 and 0.0, respectively (P = 0.02).
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| 34. |
- Panagopoulos, Ioannis, et al.
(author)
-
No EWS/FLI1 fusion transcripts in giant-cell tumors of bone
- 2001
-
In: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 93:6, s. 769-772
-
Journal article (peer-reviewed)abstract
- Giant-cell tumor of bone (GCT) is a locally aggressive neoplasm of unknown etiology and pathogenesis. Cytogenetically, no consistent chromosomal alterations, apart from telomeric associations involving various chromosome ends, have been described. Recently, however, it was reported that by using highly sensitive nested RT-PCR, a high proportion of GCT displays chimeric EWS/FLI1 fusion transcripts, i.e., the molecular genetic feature previously known to be strongly associated with the Ewing family of tumors. Thus, we decided to perform single-step and nested RT-PCR analyses on fresh frozen samples from 10 cases of GCT, all of which had also been subjected to cytogenetic analysis. After short-term culturing, none of the samples displayed any t(11;22)(q24;q12), the translocation characteristically giving rise to the EWS/FLI1 fusion, nor any other type of rearrangement of 11q24 or 22q12. Furthermore, in none of the cases did the RT-PCR analysis, whether single step or nested, result in products corresponding to a hybrid EWS/FLI1 transcript. On the basis of these results, we conclude that translocations leading to fusion of the EWS and FLI1 genes are not part of the pathogenesis of GCT.
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| 35. |
- Rahmanian, Sabina, et al.
(author)
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Regional skillnad i incidensen av skador efter ledprotesoperation
- 2024
-
In: Lakartidningen. - 0023-7205. ; 121
-
Journal article (peer-reviewed)abstract
- Hip and knee arthroplasties are mostly successful procedures; however, patient injuries may occur and should be reported to Löf, the Swedish patient insurance. This study investigated the incidence of patient injuries after primary total hip and knee arthroplasty in the Swedish regions, differences in incidence depending on annual surgical volume, and types of approved injuries. Approved patient injuries were related to the total number of hip and knee arthroplasties registered in the Swedish Arthroplasty Register 2012-2021. The national incidence was 11.4 and 8.1 per 1,000 hip and knee arthroplasties respectively and varied in the regions from 30.4 to 4.9 and 15.4 to 5.4 per 1,000 hip and knee arthroplasties respectively. Orthopedic departments with higher annual volumes of performed arthroplasties had a lower proportion of patient injuries. Infection was the most common patient injury, followed by nerve lesions and mechanical complications. The differences may be due to underreporting and varying quality of care in the regions. A centralization of hip and knee arthroplasties may be beneficial.
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| 36. |
- Ribbe, Else, et al.
(author)
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Traumasjukvården har satts under luppen i södra sjukvårdsregionen. Peer review-system för bättre vård
- 2006
-
In: Läkartidningen. - 0023-7205. ; 103:35, s. 2470-2472
-
Journal article (peer-reviewed)abstract
- I södra sjukvårdsregionen har ett arbete inletts för att kontinuerligt genomföra sakkunniga granskningar (sk peer review) av traumasjukvården inom regionen. I en första granskningsomgång har sex akutsjukhus deltagit. Resultaten har sammanställts i ett granskningsdokument, som gett upphov till såväl uppmärksamhet och diskussion som konkreta åtgärder på det granskade sjukhuset. Granskningsdokumentet har i flera fall fungerat som påtryckningsmedel för att få genomföra önskade förbättringar, tex nyanskaffning av utrustning, justering av traumaorganisationen eller stärkande av kirurgens roll. Granskningsarbetet har genomförts av »Södra sjukvårdsregionens traumagrupp«. Förhoppningen är att arbetet ska fungera som en resurs för utveckling av traumasjukvården både inom regionen och för det enskilda sjukhuset.
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| 37. |
- Rosvall, Felicia, et al.
(author)
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Clinical and Socioeconomic Effects of Misdiagnosed Wrist Ligament Injuries
- 2024
-
In: JOURNAL OF WRIST SURGERY. - 2163-3916 .- 2163-3924.
-
Journal article (peer-reviewed)abstract
- Purpose Misdiagnosed and maltreated wrist ligament injuries (scapholunate [SL], lunotriquetral, and triangular fibrocartilage complex [TFCC]) filed to the Swedish National Patient Insurance Company (LoF ["regionernas omsesidiga forsakringsbolag"]) 2011 to 2018 were analyzed in terms of complications and costs for society.Methods All filed claims are database registered. The database was assessed in June 2019 through injury International Classification of Diseases 10th Revision-SWE diagnoses. Demographics, reasons for avoidance, type of complication, and costs were assessed. Trend analysis was also used to compare the numbers of filed claims of wrist ligament injuries and total injuries.Results The mean age of the 231 extracted patients was 38 years. Females represented 57%. Ninety-eight (42%) of the claims were judged as avoidable, in accordance with the 40% approved patient injuries of all notified injuries during the same time period. Isolated injuries to the TFCC and SL ligament were the most common (n = 185, 80%). One to seven secondary surgical procedures/patient were needed to treat the condition. Sixty-nine (30%) of the 231 patients had medical invalidity due to the avoidable complication(s). Disability was more severe if more than one surgical procedure was needed. There was a significant trend toward decreasing numbers of filed claims for wrist ligament injuries ( p = 0.002) over time, in contrast to the total number of filed claims to LoF, which has increased by an average of 6% annually for a cumulative increase of 60% from 2011 to 2018.Interpretation The total cost for misdiagnosed and mistreated wrist ligament injuries in Sweden from 2011 to 2018 was euro2,203,467, and costly for both the patients and society at large.Level of Evidence Level III, therapeutic.
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| 38. |
- Rutberg, Hans, et al.
(author)
-
Adverse events in orthopedic care identified via the Global Trigger Tool in Sweden - implications on preventable prolonged hospitalizations
- 2016
-
In: Patient Safety in Surgery. - : Springer Science and Business Media LLC. - 1754-9493. ; 10:1
-
Journal article (peer-reviewed)abstract
- Background: The national incidence of adverse events (AEs) in Swedish orthopedic care has never been described. A new national database has made it possible to describe incidence, nature, preventability and consequences of AEs in Swedish orthopedic care. Methods: We used national data from a structured two-stage record review with a Swedish modification of the Global Trigger Tool. The sample was 4,994 randomly selected orthopedic admissions in 56 hospitals during 2013 and 2014. The AEs were classified according to the Swedish Patient Safety Act into preventable or non-preventable. Results: At least one AE occurred in 733 (15%, 95% CI 13.7-15.7) admissions. Of 950 identified AEs, 697 (73%) were judged preventable. More than half of the AEs (54%) were of temporary nature. The most common types of AE were healthcare-associated infections and distended urinary bladder. Patients ≥65years had more AEs (p<0.001), and were more often affected by pressure ulcer (p<0.001) and urinary tract infections (p<0.01). Distended urinary bladder was seen more frequently in patients aged 18-64 years (p=0.01). Length of stay was twice as long for patients with AEs (p<0.001). We estimate 232,000 extra hospital days due to AEs during these 2years. The pattern of AEs in orthopedic care was different compared to other hospital specialties. Conclusions: Using a national database, we found AEs in 15% of orthopedic admissions. The majority of the AEs was of temporary nature and judged preventable. Our results can be used to guide focused patient safety work.
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| 39. |
- Rydholm, Anders, et al.
(author)
-
Should tumor depth be included in prognostication of soft tissue sarcoma?
- 2003
-
In: BMC Cancer. - : Springer Science and Business Media LLC. - 1471-2407. ; 3:1
-
Journal article (peer-reviewed)abstract
- BACKGROUND: Most staging systems for soft tissue sarcoma are based on histologic malignancy-grade, tumor size and tumor depth. These factors are generally dichotomized, size at 5 cm. We believe it is unlikely that tumor depth per se should influence a tumor's metastatic capability. Therefore we hypothesized that the unfavourable prognostic importance of depth could be explained by the close association between size and depth, deep-seated tumors on average being larger than the superficial ones. When tumor size is dichotomized, this effect should be most pronounced in the large size (>5 cm) group in which the size span is larger. METHODS: We analyzed the associations between tumor size and depth and the prognostic importance of grade, size and depth in a population-based series of 490 adult patients with soft tissue sarcoma of the extremity or trunk wall with complete, 4.5 years minimum, follow-up. RESULTS: Multivariate analysis showed no major prognostic effect of tumor depth when grade and size were taken into account. The mean size of small tumors was the same whether superficial or deep but the mean size of large and deep-seated tumors were one third larger than that of large but superficial tumors. Tumor depth influenced the prognosis in the subset of high-grade and large tumors. In this subset deep-seated tumors had poorer survival rate than superficial tumors, which could be explained by the larger mean size of the deep-seated tumors. CONCLUSION: Most of the prognostic value of tumor depth in soft tissue sarcomas of the extremity or trunk wall can be explained by the association between tumor size and depth.
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| 40. |
- Sampo, M., et al.
(author)
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A web-based prognostic tool for extremity and trunk wall soft tissue sarcomas and its external validation
- 2012
-
In: British Journal of Cancer. - : Springer Science and Business Media LLC. - 1532-1827 .- 0007-0920. ; 106:6, s. 1076-1082
-
Journal article (peer-reviewed)abstract
- BACKGROUND: We developed a web-based, prognostic tool for extremity and trunk wall soft tissue sarcoma to predict 10-year sarcoma-specific survival. External validation was performed. METHODS: Patients referred during 1987-2002 to Helsinki University Central Hospital are included. External validation was obtained from the Lund University Hospital register. Cox proportional hazards models were fitted with the Helsinki data. The previously described model (SIN) includes size, necrosis, and vascular invasion. The extended model (SAM) includes the SIN factors and in addition depth, location, grade, and size on a continuous scale. Models were statistically compared according to accuracy (area under the ROC curve = AUC) of 10-year sarcoma-specific survival prediction. RESULTS: The AUC of the SAM model in 10-year survival prediction in the Helsinki patient series was 0.81 as compared with 0.74 for the SIN model (P = 0.0007). The corresponding AUCs in the external validation series were 0.77 for the SAM model and 0.73 for the SIN model (P = 0.03). A web-based calculator for the SAM model is available at http://www.prognomics.org/sam. CONCLUSION: Addition of grade, depth, and location as well as tumour size on a continuous scale significantly improved the accuracy of the prognostic model when compared with a model that includes only size, necrosis, and vascular invasion. British Journal of Cancer (2012) 106, 1076-1082. doi:10.1038/bjc.2012.48 www.bjcancer.com Published online 21 February 2012 (C) 2012 Cancer Research UK
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| 41. |
- Skytting, Björn T., et al.
(author)
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Clinical course in synovial sarcoma : A Scandinavian sarcoma group study of 104 patients
- 1999
-
In: Acta Orthopaedica Scandinavica. - : Medical Journals Sweden AB. - 0001-6470. ; 70:6, s. 536-542
-
Journal article (peer-reviewed)abstract
- We analyzed treatment and outcome in 104 Scandinavian patients with synovial sarcoma in the extremities or trunk wall, diagnosed between 1986 and 1994. Only surgically treated patients without metastases at diagnosis were included. Median follow-up of survivors was 6 (3-11) years. 34 patients developed metastases. The overall 5- and 7-year survival rates were 0.76 (95% Cl 0.66-0.83) and 0.69 (0.58-0.78), respectively. Large tumor size and amputation were significantly associated with impaired metastasis-free survival. Patients with local recurrence had a higher risk of metastases following the local event. Local excision with inadequate margin was associated with a higher risk of local recurrence.
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| 42. |
- Stefansdottir, Anna, et al.
(author)
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Inadequate timing of prophylactic antibiotics in orthopedic surgery. We can do better.
- 2009
-
In: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3682 .- 1745-3674. ; 80:6, s. 633-638
-
Journal article (peer-reviewed)abstract
- BACKGROUND AND PURPOSE: There are rising concerns about the frequency of infection after arthroplasty surgery. Prophylactic antibiotics are an important part of the preventive measures. As their effect is related to the timing of administration, it is important to follow how the routines with preoperative prophylactic antibiotics are working. METHODS: In 114 consecutive cases treated at our own university clinic in Lund during 2008, the time of administration of preoperative prophylactic antibiotic in relation to the start of surgery was recorded from a computerized operation report. In 291 other cases of primary total knee arthroplasty (TKA), randomly selected from the Swedish Knee Arthroplasty Register (SKAR), the type and dose of prophylactic antibiotic as well as the time of administration in relation to the inflation of a tourniquet and to the start of surgery was recorded from anesthetic records. RESULTS: 45% (95% CI: 36-54) of the patients operated in Lund and 57% (CI: 50-64) of the TKAs randomly selected from the SKAR received the preoperative antibiotic 15-45 min before the start of surgery. 53% (CI: 46-61) received antibiotics 15-45 min before inflation of a tourniquet. INTERPRETATION: The inadequate timing of prophylactic antibiotics indicates that the standards of strict antiseptic and aseptic routines in arthroplasty surgery are falling. The use of a simple checklist to ensure the surgical safety may be one way of reducing infections in arthroplasty surgery.
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| 43. |
- Storlazzi, Tiziana, et al.
(author)
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A novel fusion gene, SS18L1/SSX1, in synovial sarcoma
- 2003
-
In: Genes, Chromosomes and Cancer. - : Wiley. - 1045-2257 .- 1098-2264. ; 37:2, s. 195-200
-
Journal article (peer-reviewed)abstract
- Synovial sarcoma is an aggressive soft tissue tumor that is characterized cytogenetically by the t(X;18)(p11;q11) translocation, resulting in fusion between the SS18 gene on chromosome 18 and one of the SSX genes on the X chromosome. The three fusion genes that have been detected thus far, SS18/SSX1, SS18/SSX2, and SS18/SSX4, account for more than 95% of the synovial sarcomas. Because SS18/SSX fusions do not seem to occur in other tumor types, and because synovial sarcomas may sometimes be difficult to distinguish from other spindle cell tumors, molecular genetic analysis has become established as an important diagnostic tool. Upon cytogenetic analysis of a soft-tissue tumor that showed classic synovial sarcoma morphology, we detected two supernumerary marker chromosomes but no rearrangement of chromosomes X or 18. By fluorescence in situ hybridization, the marker chromosomes were shown to contain material from chromosomes X and 20, including the SSX gene cluster on the X chromosome and the SS18L1 gene, which shows strong homology with the SS18 gene, on chromosome 20. Further RT-PCR analysis and sequencing of the amplified products revealed a novel SS18L1/SSX1 fusion transcript in which nucleotide 1216 (exon 10) of SS18L1 was fused in-frame with nucleotide 422 (exon 6) of SSX1. Thus, the existence of genetic heterogeneity has to be taken into account when RT-PCR is used for the diagnosis of synovial sarcoma.
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| 44. |
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| 45. |
- Svarvar, Catarina, et al.
(author)
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Clinical course of nonvisceral soft tissue leiomyosarcoma in 225 patients from the Scandinavian Sarcoma Group.
- 2007
-
In: Cancer. - : Wiley. - 0008-543X .- 1097-0142. ; 109:2, s. 282-91
-
Journal article (peer-reviewed)abstract
- BACKGROUND: Leiomyosarcoma of nonvisceral soft tissues is an uncommon malignant tumor; thus, only small numbers of cases have been reported. This study was based on a large series of patients from the Scandinavian Sarcoma Group Register acquired during a 15-year period (from 1986 to 2001). Follow-up information was available for all patients. METHODS: The authors analyzed the clinical features of 225 patients with cutaneous, subcutaneous, or deep-seated leiomyosarcoma of the extremities, trunk wall, and superficial parts of the head and neck region to determine the natural course of the disease. Only patients who received their treatment at a specialist sarcoma center were included. Re-evaluation of histopathology was performed. RESULTS: The age of the patients (121 women and 104 men) ranged from 20 years to 98 years (median, 70 years), and the tumors ranged in size from 0.6 cm to 35 cm (median, 4.0 cm). Eighty-two percent of the tumors were classified as high grade. The median follow-up for survivors was 5.5 years. The local treatment was adequate in 154 of 206 patients (75%) who were without metastasis at presentation. At 10 years, 84% of the 206 patients with localized disease at presentation were free from local recurrence, 66% remained metastasis free, and 49% were alive. Multivariate analysis showed that higher malignancy grade (P = .006), larger tumor size (P = .003), and deeper tumor location (P = .002) were correlated significantly with decreased metastasis-free survival, inadequate local treatment was correlated with local recurrence (P = .007), and high malignancy grade was correlated with decreased overall survival (P = .007). CONCLUSIONS: The long-term prognosis for patients with subcutaneous and deep-seated soft tissue leiomyosarcoma remains poor despite the ability to achieve adequate local control through nonmutilating surgery with or without radiotherapy.
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| 46. |
- Trovik, CS, et al.
(author)
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Local recurrence of deep-seated, high-grade, soft tissue sarcoma : 459 Patients from the Scandinavian Sarcoma Group Register
- 2001
-
In: Acta Orthopaedica Scandinavica. - : Medical Journals Sweden AB. - 0001-6470. ; 72:2, s. 160-166
-
Journal article (peer-reviewed)abstract
- This study was based on 459 adult patients with deep, high-grade, soft tissue sarcoma of extremities or trunk wall reported to the Scandinavian Sarcoma Group Register (1986-1993). All patients had their definitive surgery for primary tumor at a sarcoma center. The median follow-up was 7.5 (3-12) years. 204 patients are still alive. 68 patients had amputations and 391 underwent limb-sparing surgery. Among 183 patients with intralesional or marginal margins after limb-sparing surgery, 65% had postoperative radiotherapy and 9% of the 198 patients with wide margins. The local recurrence rate after limb-sparing surgery was 26%. The rate with an intralesional or marginal margin was 39% without postoperative radiotherapy versus 24% when radiotherapy was given. It was 25% after a wide margin, and no recurrences were noted among the 10 patients with a compartmental surgical margin. Among patients with a wide margin, a subset fulfilling criteria for a myectomy was defined. The local recurrence rate was 26% among these 62 and there was no advantage of myectomy over other wide margins. More radical surgical margins would improve the local recurrence rate, but this can hardly be achieved in center-operated patients without increasing the amputation rate. Instead, increased use of radiotherapy in all patients with inadequate margins, and to a larger extent in those with wide margins will improve local control.
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| 47. |
- W-Dahl, Annette, et al.
(author)
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Timing of preoperative antibiotics for knee arthroplasties : Improving the routines in Sweden
- 2011
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In: Patient Safety in Surgery. - : Springer Science and Business Media LLC. - 1754-9493. ; 5:1
-
Journal article (peer-reviewed)abstract
- Background: A slight increase in revisions for infected joint arthroplasties has been observed in the Nordic countries since 2000 for which the reasons are unclear. However, in 2007 a Swedish study of the timing for prophylactic antibiotics in a random sample of knee arthroplasties found that only 57% of the patients had received the antibiotic during the optimal time interval 45-15 minutes before surgery. The purpose of the report was to evaluate the effect of measures taken to improve the timing of prophylactic antibiotics.Findings: Reporting this finding to surgeons at national meetings during 2008 the Swedish Knee Arthroplasty Register (SKAR) introduced a new report form from January 2009 including the time for administration of preoperative antibiotics. Furthermore, the WHO's surgical checklist was introduced during 2009 and a national project was started to reduce infections in arthroplasty surgery (PRISS). The effect of these measures was found to be positive showing that in 2009, 69% of the 12,707 primary knee arthroplasties were reported to have received the prophylaxis within the 45-15 min time interval and 79% of the first 7,000 knee arthroplasties in 2010. A survey concerning the use of the WHO checklist at Swedish hospitals showed that 73 of 75 clinics had introduced a surgical checklist.Conclusions: By registration and bringing back information to surgeons on the state of infection prophylaxis in combination with the introduction of the WHO checklist and the preventive work done by the PRISS project, the timing of preoperative prophylactic antibiotics in knee arthroplasty surgery was clearly improved.
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| 48. |
- Wrigstad, Jonas, et al.
(author)
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Incident investigations by the regulatory authority of Swedish healthcare - a 20-year perspective
- 2015
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In: Journal of Hospital Administration. - : Sciedu Press. - 1927-6990 .- 1927-7008. ; 4:6, s. 68-76
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Journal article (peer-reviewed)abstract
- Objective: The purpose of this study was to describe procedural changes in hospital incident investigations and show the consequences of these changes over time. Methods: A two-stage method was used. First component of the study was a content analysis of 87 incident investigations conducted 1995-2014 by the regulatory authority after adverse events in a Swedish university hospital. Second component was conducting semi-structured interviews with 11 investigators from all regulatory authority regional offices in Sweden. Results: In a minority of incident investigations, where further demands for action were required by the regulatory authority, a major portion of these were aimed at the micro-level. A plan for follow-up was expressed in only one tenth of the investigations. All investigators had a background from the healthcare system and saw this as advantageous. Their personal memory was claimed to be the only tool when referring to previous cases. Less fieldwork, more office work and more uniformity of language were recognised changes in comparison over time. The role of doing “auditing” was the most common description by the investigators themselves. Conclusions: The micro-level focus of the investigations reflected an organisational structure within the regulatory authority. We saw signs of parallel system weaknesses within the Swedish healthcare system with a clear absence of formalised organisational memory and a malfunctioning follow-up system of incident investigations. This can be seen both regarding the healthcare providers and the regulatory authority. The reports from the qualitative interviews data indicated that “auditing at the office” was considered the main occupation in incident investigations conducted by the regulatory authority.
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- Wrigstad, Jonas, et al.
(author)
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On safety ontology : A cross-section analysis of incident investigations in a public healthcare system
- 2017
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In: Safety in Health. - : Springer Science and Business Media LLC. - 2056-5917. ; 3:13
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Journal article (peer-reviewed)abstract
- Background:Due to new legislation in 2011 and 2013, the Swedish public healthcare system has undergone change as regards incident reporting and supervision. Focus has turned to learning from adverse events and sharing this learning with actors within the system. The aim of this study was to explore with what underlying safety ontology adverse events in the incident reporting system are investigated.Methods:A content analysis of 90 official and recently completed incident investigations from all six regionalsupervisory authority offices in Sweden was performed. Data was examined per nature of the investigation, numberof targets for intervention, specific final comments in the investigation and the decision from the supervisory authority. A coding scheme was used to identify the organisational level of the targets for intervention.Results:With different investigation methods in use, this incident reporting system still seems to contribute to are production of an organisational micro-level understanding of how risks emerge with a focus that operates inthe event’s immediate spatial proximity. There are no signs of constructive dialogue on exposed matters between the main actors: the healthcare provider organisation and the supervisory authority. There are strong examples of mistranslation of social infrastructure from other safety-critical organisations. Actors and individuals at the blunt endof the healthcare system adapt to new legislation and organisational change by balancing rhetoric and practiceduring fulfilment of stated obligations.Conclusions:Our findings support that traditional linear causality construction and traditional norms remain intactdespite new legislation and recent organisational change. Through efficient and adapted working procedures bythe main actors, this model still brings societal closure of harm and thereby a way to focus on moving on forward
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