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- Ahlman, Håkan, 1947, et al.
(författare)
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Clinical management of gastric carcinoid tumors.
- 1994
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Ingår i: Digestion. - 0012-2823. ; 55 Suppl 3, s. 77-85
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Tidskriftsartikel (refereegranskat)abstract
- Four types of gastric carcinoids have been identified: (1) multiple small body-fundus carcinoids associated with chronic atrophic gastritis type A (A-CAG); (2) sporadic solitary lesions without specific pathogenetic background (non-A-CAG); (3) carcinoidosis associated with Zollinger-Ellison/MEN 1 syndrome, and (4) rare tumors, e.g. gastrin cell tumors, neuroendocrine carcinomas and mixed endocrine-exocrine tumors. In a retrospective study of 15 patients with gastric carcinoids (11 A-CAG, 3 non-A-CAG and 1 gastrin cell tumor) over a 10-year period, the histopathological and clinical features were assessed. The A-CAG-type carcinoids were clinically silent with lymph node metastases in 2/11 cases but no hepatic metastases. The non-A-CAG-type carcinoids were malignant with disseminated disease, hormonal symptoms and increased urinary excretion of the main histamine metabolite, MeImAA. Five patients with A-CAG tumors were subjected to antrectomy to remove hypergastrinemia, which is thought to be of pathogenetic importance for these tumors. During the observation period (1.5-8 years) 1 patient developed recurrent tumors, while the other 4 showed persistent argyrophil cell hyperplasia. A prospective treatment protocol of these tumors is suggested with endoscopic removal of less numerous, small lesions as first-step therapy, followed by antrectomy at recurrence. Larger lesions should be excised in combination with antrectomy. Gastrectomy is reserved for the rare cases of invasive tumors with lymph node metastases. As evident from the outcome of patients with non-A-CAG tumors radical surgery should be performed whenever practicable.
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- Andersson, Mats, 1954, et al.
(författare)
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Evaluation of the response to treatment in patients with idiopathic achalasia by the timed barium esophagogram: results from a randomized clinical trial.
- 2009
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Ingår i: Diseases of the Esophagus. - : Oxford University Press (OUP). - 1442-2050 .- 1120-8694. ; 22:3, s. 264-73
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Tidskriftsartikel (refereegranskat)abstract
- To choose which treatment would be most effective for the individual patient with newly diagnosed achalasia is difficult for the tending physician. A diagnostic tool that would allow prediction of the symptomatic and functional response after treatment for achalasia is therefore needed. The timed barium esophagogram (TBE) is a method that allows objective assessment of esophageal emptying, but the value of TBE in the clinical management of achalasia remains to be clarified. The aim of this study was first, to assess the ability of TBE to predict symptoms and treatment failure during post-treatment follow-up. Second, to determine whether esophageal emptying as assessed by TBE differs after treatment with pneumatic dilatation or laparoscopic myotomy. Fifty-one patients with newly diagnosed achalasia were prospectively randomized to pneumatic dilatation (n = 26) or laparoscopic myotomy (n = 25). Evaluation with TBE was performed before (n = 46) and after treatment (n = 43). The median interval between treatment and post-treatment TBE was 6 months, and the median follow-up time after the post-treatment TBE was 18 months. Following therapeutic intervention, TBE parameters did not differ significantly between treatment groups. However, significant correlations were found between the height of the barium column at 1 min and the symptom scores at the end of follow up for 'dysphagia for liquids' (P < 0.05, rho = 0.47), 'chest pain' (P < 0.05, rho = 0.42), and the 'Watson dysphagia score' (P < 0.05, rho = 0.46). Patients with less than 50% improvement in this TBE-parameter (height at 1 min) post-treatment had a 40% risk of treatment failure during follow-up. In summary, pneumatic balloon dilatation and laparoscopic myotomy similarly affected esophageal function as assessed by TBE-emptying. Lack of improvement in barium-column height post-treatment was associated with an increased risk of treatment failure which should motivate close surveillance in order to detect symptomatic recurrence at an early stage.
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- Andersson, Mats, 1954, et al.
(författare)
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MRI combined with MR cholangiopancreatography versus helical CT in the evaluation of patients with suspected periampullary tumors: a prospective comparative study
- 2005
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Ingår i: Acta Radiol. - : SAGE Publications. - 0284-1851. ; 46:1, s. 16-27
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: To establish the diagnostic accuracy of MRI including MR cholangiopancreatography (MRCP) compared with helical CT in the differentiation of malignant and benign lesions in the periampullary region. MATERIAL AND METHODS: Fifty-one patients (27 M, 24 F, mean age 66 years, range 39-86 years) with obstructive jaundice and sonographic evidence of intra- and extrahepatic bile duct dilatation (n=31) or suspicion of periampullary tumor, based on previously performed ultrasound and/or CT examination (n=20), were studied. MRI with MRCP and helical CT were reviewed blindly under standardized conditions. Lesion status (differentiation of malignant versus benign) was rated on a 5-point diagnostic confidence scale. Reference standards for comparison were findings at surgery or laparoscopy and/ or the clinical outcome. The predictive value of imaging findings was determined with multivariate logistic regression analysis. RESULTS: The areas under the receiver operating characteristic curve were 0.96 for MRI with MRCP and 0.81 for CT (P <0.05). Multivariate analysis of eight imaging variables at MRI indicated that a stricture with malignant characteristics at MRCP was the best predictor of malignancy. CONCLUSION: MRI with MRCP was significantly more accurate than CT in differentiating between malignant and benign lesions in patients with suspected periampullary tumors, mainly due to the information obtained on the MRCP images of the biliary and pancreatic duct anatomy.
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- Bergquist, Henrik, 1969, et al.
(författare)
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Combined stent insertion and single high-dose brachytherapy in patients with advanced esophageal cancer - results of a prospective safety study.
- 2011
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Ingår i: Diseases of the esophagus. - : Oxford University Press (OUP). - 1442-2050 .- 1120-8694. ; Early View
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Tidskriftsartikel (refereegranskat)abstract
- Previous randomized studies comparing the two commonly used palliative treatments for incurable esophageal cancer, i.e. stent insertion and intraluminal brachytherapy, have revealed the pros and cons of each therapy. While stent treatment offers a more prompt effect, brachytherapy results in more long-lasting relief of dysphagia and a better health-related quality of life (HRQL) in those living longer. This prospective pilot study aimed to explore the feasibility and safety of combining these two regimes and incorporating a single high dose of internal radiation. Patients with newly diagnosed, incurable cancer of the esophagus and dysphagia were eligible for inclusion, and stent insertion followed by a single dose (12Gy) of brachytherapy was performed as a two-stage procedure. Clinical parameters including HRQL and adverse events were registered at inclusion, and 1, 2, 3, 6, and 12 months later. Twelve patients (nine males) with a median age of 73 years (range 54-85) were included. Stent insertion followed by a single dose of brachytherapy was successfully performed in all but one patient who was treated with stent only. Relief of dysphagia was achieved in the majority of cases (10/11, P < 0.05), but HRQL did not improve except for dysphagia-related items. Only minor adverse events, including chest pain, reflux, and restenosis, were reported. The median survival time after inclusion was 6.6 months. Our conclusion is that the combination of stent insertion and single high-dose brachytherapy seems to be a feasible and safe palliative regime in patients with advanced esophageal cancer. Randomized trials comparing the efficacy of this strategy to stent insertion or brachytherapy alone are warranted.
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- Bergquist, Henrik, 1969, et al.
(författare)
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Functional long-term outcome of a free jejunal transplant reconstruction following chemoradiotherapy and radical resection for hypopharyngeal and proximal oesophageal carcinoma
- 2004
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Ingår i: Digestive surgery. ; :21, s. 426-433
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/AIMS: To evaluate the functional outcome of a reconstruction by a free vascularized jejunal transplant combined with a voice prosthesis after chemoradiotherapy and surgery for proximal oesophageal or hypopharyngeal cancer. METHODS: Seven patients (6 men, mean age 52 years, range 28-70) with squamous cell cancer in the proximal oesophagus (n = 6) or the hypopharynx received preoperative chemoradiotherapy (40.8 Gy, cisplatinum and 5-FU) followed by a circumferential pharyngolaryngectomy and resection of the proximal oesophagus. A single-stage reconstruction was carried out with a free jejunal transplant using a microsurgical technique. A tracheojejunal puncture and insertion of a voice prosthesis (Provox I) was performed after 3 months in suitable cases. RESULTS: All operations had a per- and postoperative uneventful course. Five patients were alive after a mean follow-up time of 5 years and 7 months after surgery (range 3 years 4 months to 7 years 10 months), while 2 patients died from metastases within 2 years after surgery. Postoperative examination showed histopathological down-staging in all cases. Relief of dysphagia was achieved in most cases. Good or average speech was recorded in 3 patients. CONCLUSION: Reconstruction after radical resection for proximal oesophageal and hypopharyngeal cancer can be carried out with low mortality, acceptable morbidity and a promising functional outcome.
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