| 1. |
|
|
| 2. |
- Andersson, Roland, et al.
(författare)
-
Retroperitoneal bronchogenic cyst as a differential diagnosis of pancreatic mucinous cystic tumor.
- 2003
-
Ingår i: Digestive Surgery. - : S. Karger AG. - 0253-4886 .- 1421-9883. ; 20:1, s. 55-57
-
Tidskriftsartikel (refereegranskat)abstract
- Cystic tumors of the pancreas where a pseudocyst has not been able to be excluded has been considered potentially proliferative and pre-malignant or malignant and thus aggressive surgical approach has been advocated. Retroperitoneal cystic tumors are rare and among these bronchogenic cysts are extremely infrequent. The present paper describes a case of bronchogenic cyst in association with the pancreas in which diagnostic work-up was not able to exclude a proliferative pancreatic cystic tumor.
|
|
| 3. |
- Bengtsson, Johan, et al.
(författare)
-
The effects of uterine artery embolization with a new degradable microsphere in an experimental study
- 2017
-
Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 58:11, s. 1334-1341
-
Tidskriftsartikel (refereegranskat)abstract
- Background Transarterial particle embolization is a common treatment of uterine fibroids, aiming to obtain ischemia resulting in shrinking of the fibroid with preservation of normal uterine tissue. Embolization with non-degradable microspheres is established, but causes permanent occlusion of the arteries, affecting both the uterus as well as the fibroids. Purpose To evaluate in vivo degradation, local tissue effects, and possible recanalization following intra-arterial deposition of the new, degradable starch microspheres (DSM), in a short-term experimental pilot study. Material and Methods Under general anesthesia, unilateral transarterial embolization of the uterine artery (UA) with DSM 500-700 μm was performed in five female sheep. The animals underwent renewed angiography at different intervals after embolization (19-65 h) and were subsequently sacrificed. Histological examination was performed. Results Embolization with absent flow in the UA could be completed in five of six animals. At final angiographic evaluation, recanalization of the embolized arteries was evident in three sheep. At the gross postmortem examination, edema and discoloration indicating ischemia of the uterus at the embolized side, was observed in all the sheep. At histopathological examination, different stages of DSM degradation in the arterial branches were observed in both endometrium and myometrium. Mild-to-moderate vasculitis and mild-to-extensive ischemic changes were present along with degeneration of the uterine glands. Conclusion This short-term pilot study proved efficacy of embolization with DSM causing ischemic changes in the embolized organ, but also degradation of the DSM with subsequent recanalization of the embolized arteries.
|
|
| 4. |
- Cwikiel, Wojciech, et al.
(författare)
-
Disappearance of esophageal carcinoma after stenting combined with endoscopic laser therapy
- 1995
-
Ingår i: Cardiovascular and Interventional Radiology. - 0174-1551. ; 18:4, s. 247-250
-
Tidskriftsartikel (refereegranskat)abstract
- A 92-year-old man with dysphagia secondary to squamous cell carcinoma of the esophagus was palliated repeatedly with endoscopic laser therapy and insertion of esophageal stents. During the treatment period of 32 months, the patient could be fed perorally while ingrowth of tumor, development of new stenoses at the edges of the stents, and breakage of one stent were encountered. A tracheoesophageal fistula developed at the upper edge of the first stent. The patient died from aspiration pneumonia. At autopsy, no cancer cells were found in the esophagus. Combined endoscopic laser treatment and stent therapy may keep a patient free from dysphagia during a long period of time and also may result in the complete disappearance of tumor growth in the esophagus.
|
|
| 5. |
|
|
| 6. |
- Cwikiel, Wojciech, et al.
(författare)
-
Endovascular Treatment of Two Pseudoaneurysms Originating From the Left Ventricle.
- 2013
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 36:6, s. 1677-1680
-
Tidskriftsartikel (refereegranskat)abstract
- A 67-year-old woman resented with an acute type A aortic dissection, which was treated surgically with aortic valve replacement as a composite graft with reimplantation of the coronary arteries. At the end of surgery, a left-ventricular venting catheter was placed through the apex and closed with a buffered suture. Consecutive computed tomography (CT) examinations verified a growing apex pseudoaneurysm. Communication between the ventricle and the pseudoaneurysm was successfully closed with an Amplatz septal plug by the transfemoral route. Follow-up CT showed an additional pseudoaneurysm, which also was successfully closed using the same method.
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
- Cwikiel, Wojciech, et al.
(författare)
-
Non-traumatic vascular emergencies: imaging and intervention in acute arterial conditions
- 2002
-
Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 12:11, s. 2619-2626
-
Tidskriftsartikel (refereegranskat)abstract
- Methods of imaging and intervention in acute non-traumatic vascular arterial conditions has changed substantially during recent years. Computed tomography, MRI angiography and, more recently, intravascular ultrasonography (IVUS) have replaced to a large extent conventional diagnostic angiography. An increasing number of patients are treated by endovascular interventions and numerous new treatment methods have been evaluated. Technical development of new equipment and instruments, increasing skill of interventional radiologists and better understanding of events following interventions improve continuously results of the treatment. Radiologic diagnosis and intervention have important roles in the treatment of acute non-traumatic vascular arterial conditions.
|
|
| 10. |
|
|
| 11. |
- Harnek, Jan, et al.
(författare)
-
Insertion of Self-Expandable Nitinol Stents Without Previous Balloon Angioplasty Reduces Restenosis Compared with PTA Prior to Stenting.
- 2002
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 25:3, s. 430-436
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: To compare the development of intimal hyperplasia after deployment of a self-expanding nitinol stent with and without previous percutaneous transluminal balloon angioplasty (PTA), with the results after PTA alone. Methods: In nine healthy pigs, the iliac arteries were divided into three groups: group 1 (n = 6 arteries) was treated with PTA; group 2 n = 6) with insertion of self-expanding stents after PTA; and group 3 (n = 6) with stent insertion without previous PTA. After 8 weeks the vessels were examined with intravascular ultrasonography, histologic examination and morphometric analysis. Results: Although the injury index in group 1 (0.17 +/- 0.57) was lower (p <0.05) than in group 2 (0.26 +/- 0.06) and group 3 (0.26 +/- 0.08), PTA-treated arteries showed significantly (p <0.05) reduced mean luminal gain (0.53 +/- 2.84) compared with arteries treated with PTA prior to stenting (2.58 +/- 1.38) and compared with stenting alone (4.65 +/- 5.34). Stenting after PTA resulted in a higher (p <0.05) restenosis index (2.63 +/- 1.06) compared with stenting without PTA (1.35 +/- 0.59). Group 2 also had a significantly thicker intima p <0.05) and 83% and 74% higher intima/media ratio (p <0.05) compared with groups 1 and 3, respectively. Conclusion: Insertion of a self-expandable nitinol stent without previous PTA results in less intimal hyperplasia than if PTA is performed prior to stenting, suggesting that direct stenting can be used in angioplasty sessions with a favorable outcome.
|
|
| 12. |
- Hughes, Marion, et al.
(författare)
-
Conformation of adjacent self-expanding stents: a cross-sectional in vitro study
- 2006
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 29:2, s. 255-259
-
Tidskriftsartikel (refereegranskat)abstract
- We examined the proximal conformation of three commonly used self-expanding stents when the stents were deployed adjacent to one another in a tubular model, simulating a "kissing" stent technique. The stent pairs were evaluated by computed tomogrphy to determine the cross-sectional area excluded by the stents within the model. The mean areas associated with each stent pair were compared and significance evaluated by a t-test. A statistically significant difference was found when the area excluded by adjacent Wallstents was compared with both the Luminexx and SMART stents (p < 0.001 and p < 0.002, respectively). The difference in the area excluded and differences in conformation might play a role in the lower patencies that have been observed in "kissing" stent series.
|
|
| 13. |
- Keussen, Inger, et al.
(författare)
-
Changes in the distribution of hepatic arterial blood flow following TIPS with uncovered stent and stent-graft: An experimental study
- 2002
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 25:4, s. 314-317
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: To evaluate changes in distribution of hepatic arterial blood flow in the liver following insertion of an uncovered stent and subsequently a stent-graft in the trans-jugular intrahepatic portosystemic shunt (TIPS) channel. Methods: The experiments were performed in eight healthy pigs under general anesthesia. In a pilot study in one pig, scintigraphic evaluation of arterial perfusion to the liver was done before and after inflation of a balloon in the right hepatic vein. In the other pigs, outflow from the right liver vein was checked repeatedly by contrast injection through a percutaneously inserted catheter. The arterial perfusion through the liver was examined by scintigraphy, following selective injection of macro-aggregate of Tc-99(m)-labeled human serum albumin Tc-99(m)-HSA) into the hepatic artery. This examination was done before and after creation of a TIPS with an uncovered stent and subsequently after insertion of a covered stent-graft into the cranial portion of the shunt channel. Results: In the pilot study changes in the arterial perfusion to the liver were easily detectable by scintigraphy. One pig died during the procedure and another pig was excluded due to dislodgement of the hepatic artery catheter. The inserted covered stent obstructed venous outflow from part of the right liver lobe. The Tc-99(m)-HSA activity in this part remained unchanged after TIPS creation with an uncovered stent. A reduction in activity was seen after insertion of a stent-graft (p = 0.06). Conclusion: The distribution of the hepatic arterial blood flow is affected by creation of a TIPS with a stent-graft, in the experimental pig model.
|
|
| 14. |
- Keussen, Inger E., et al.
(författare)
-
Treatment of the acute severe pulmonary embolism using endovascular methods
- 2018
-
Ingår i: Polish Journal of Radiology. - : Termedia Sp. z.o.o.. - 1733-134X .- 1899-0967. ; 83, s. 248-252
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: To present a single-centre experience with endovascular treatment of patients with severe symptoms secondary to acute pulmonary embolism (PE). Material and methods: Twenty-five patients were treated due to contraindications or deficient effects of systemic throbolytic therapy. The patients were treated with a combination of fragmentation and aspiration, only aspiration, only fragmentation, and with catheter-directed thrombolytic therapy. Results: The saturation was improved following treatment in all patients, except in one where the procedure counot be completed. There were no immediate or late procedure-related complications. Conclusions: Endovascular treatment of severe PE is a safe and efficient option in patients with failing effect or contindication to systemic thrombolysis.
|
|
| 15. |
- Keussen, Inger, et al.
(författare)
-
Sharp Recanalization of the Esophageal Occlusion Using Transjugular Access Set. Report of Two Cases.
- 2014
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 37:5, s. 1381-1383
-
Tidskriftsartikel (refereegranskat)abstract
- Two male patients, 75 and 53 years old, with totally occluded esophagus were treated. Sharp recanalization was performed using a combined radiologic and endoscopic technique. Following successful penetration with the needle through the occluded segment and balloon dilation, the created channel was stabilized with esophageal stent, with subsequent palliative effect.
|
|
| 16. |
- Kullendorff, Carl-Magnus, et al.
(författare)
-
Embolization of Hepatic Hemangiomas in Infants
- 2002
-
Ingår i: European Journal of Pediatric Surgery. - : Georg Thieme Verlag KG. - 1439-359X .- 0939-7248. ; 12:5, s. 348-352
-
Tidskriftsartikel (refereegranskat)
|
|
| 17. |
- Kullendorff, Carl-Magnus, et al.
(författare)
-
Stenting of the biliary tract in children.
- 2002
-
Ingår i: European Journal of Pediatric Surgery. - : Georg Thieme Verlag KG. - 1439-359X .- 0939-7248. ; 12:3, s. 199-202
-
Tidskriftsartikel (refereegranskat)abstract
- We report on the technique and results of percutaneous transhepatic biliary drainage (PTBD) in children with obstructive jaundice. Three patients aged 8 - 15 years were treated, two of them for a benign and one for a malignant stricture. Endoscopic treatment was not possible and all the PTBD procedures were done under general anaesthesia. One of the children was treated with external-internal drainage, and the two others by insertion of a plastic endoprosthesis. There were no immediate complications. The PTBD had a good palliative effect in two cases, and in one case surgical treatment was necessary. We conclude that PTBD is a safe modality and that it can be used in children for the relief of obstructive jaundice.
|
|
| 18. |
- Löfberg, Anne-Marie
(författare)
-
Infrainguinal Percutaneous Transluminal Angioplasty in Limbs with Severe Lower Limb Ischaemia
- 2001
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Infrainguinal bypass grafting is an established method in the treatment of patients with femoropopliteal and crural occlusive disease leading to critical lower limb ischaemia (CLI). However, complications related to surgical procedure are not negligible and percutaneous transluminal angioplasty (PTA) has emerged as an alternative. The present thesis covers some aspects of infrainguinal PTA in patients with chronic severe lower limb ischaemia.The records of 217 patients undergoing 272 PTA procedures at various infrainguinal arterial segments were analysed. The indication for intervention was subcritical ischaemia in 76 limbs and critical ischaemia in 177 limbs. The role of duplex ultrasound examination in the selection of patients for PTA was retrospectively evaluated following a prospective validation of the method against angiography.A technically successful PTA was achieved in 89%. The overall 30-day mortality was 2.7%. No patient underwent amputation directly related to failed PTA. The primary success rates at 12 and 60 months following femoropopliteal PTA were 40% and 27% compared, to 51% and 36% in limbs undergoing crural artery PTA. Primary success rate in limbs with SFA occlusion longer than 5 cm was only 12% after 5 years, compared to 32% if the occlusion was equal or less than 5 cm in length (p<0.01). In patients undergoing distal PTA through patent infrainguinal grafts, the primary and primary assisted patency rates at 3 years were 32% and 53%, respectively. The sensitivity of duplex scanning in the selection of lesions for PTA was less satisfactory in the popliteal and crural arteries compared to the superficial femoral arteries.In conclusion, the results of infrainguinal PTA performed for treatment of subcritical or CLI seemed to be inferior to the results of surgical interventions reported in the literature. However, due to the fact that the PTA procedure does not preclude the performance of bypass grafting, it might be an alternative to surgical intervention in limbs with stenotic or short occlusive lesions.
|
|
| 19. |
- Semiz-Oysu, Aslihan, et al.
(författare)
-
Interventional radiological management of prehepatic obstruction the splanchnic venous system
- 2007
-
Ingår i: Cardiovascular and Interventional Radiology. - : Springer Science and Business Media LLC. - 1432-086X .- 0174-1551. ; 30:4, s. 688-695
-
Tidskriftsartikel (refereegranskat)abstract
- The purpose of this study was to retrospectively evaluate interventional radiological management of patients with symptomatic portal hypertension secondary to obstruction of splanchnic veins. Twenty-four patients, 15 males and 9 females, 0.75 to 79 years old (mean, 36.4 years), with symptomatic portal hypertension, secondary to splanchnic venous obstruction, were treated by percutaneous methods. Causes and extent of splanchnic venous obstruction and methods are summarized following a retrospective evaluation. Obstructions were localized to the main portal vein (n = 22), intrahepatic portal veins (n = 8), splenic vein (n = 4), and/or mesenteric veins (n = 4). Interventional treatment of 22 (92%) patients included recanalization (n = 19), pharmacological thrombolysis (n = 1), and mechanical thrombectomy (n = 5). Partial embolization of the spleen was done in five patients, in two of them as the only possible treatment. TIPS placement was necessary in 10 patients, while an existing occluded TIPS was revised in two patients. Transhepatic embolization of varices was performed in one patient, and transfemoral embolization of splenorenal shunt was performed in another. Thirty-day mortality was 13.6% (n=3). During the follow-up, ranging between 2 days and 58 months, revision was necessary in five patients. An immediate improvement of presenting symptoms was achieved in 20 patients (83%). We conclude that interventional procedures can be successfully performed in the majority of patients with obstruction of splanchnic veins, with subsequent improvement of symptoms. Treatment should be customized according to the site and nature of obstruction.
|
|
| 20. |
- Semiz-Oysu, Aslihan, et al.
(författare)
-
Stent-graft placement for urgent treatment or prevention of bleeding
- 2012
-
Ingår i: Acta Radiologica. - : SAGE Publications. - 1600-0455 .- 0284-1851. ; 53:1, s. 28-33
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Stent-graft treatment of the patients with ongoing bleeding may be beneficial in specific situations, especially when preservation of blood flow to the distant organs is important. Purpose: To present the results of stent-graft placement for urgent treatment or prevention of the bleeding. Material and Methods: Stent-graft placement was performed urgently for the treatment of active bleeding and/or pseudoaneurysm/aneurysm in 17 patients. Diagnoses were based on clinical findings and/or imaging studies. The etiology was previous major surgery and/or percutaneous intervention in 13, malignancy in one, pancreatitis and pseudocyst in one, multitrauma due to traffic accident in one and unknown cause in one patient. Results: A total of 23 stent-grafts were placed. Angiograms obtained after placement revealed patent stent-graft with no further active extravasation or filling of pseudoaneurysm in 14 patients. Due to persistent bleeding, embolization was performed in two patients. In three patients, the stent-grafts were found to be thrombosed either immediately after placement (n = 1) or at follow-up (n = 2). Stent-grafts were patent in six of nine patients that could be followed (between 3 months and 6 years). Conclusion: Urgent stent-graft placement may be an alternative to endovascular embolization or surgery. It may be preferred when embolization is technically difficult or impossible and/or when preservation of blood supply to distal organs is essential such as in liver transplant grafts or extremity salvage.
|
|
| 21. |
- Smith, Gustav, et al.
(författare)
-
Acute right ventricular failure caused by concomitant coronary and pulmonary embolism: successful treatment with endovascular coronary and pulmonary thrombectomy.
- 2013
-
Ingår i: European Heart Journal: Acute Cardiovascular Care. - : Oxford University Press (OUP). - 2048-8734 .- 2048-8726. ; 2:2, s. 131-136
-
Tidskriftsartikel (refereegranskat)abstract
- Patent foramen ovale (PFO) is present in approximately 25% of the general population. PFO is characterized by intermittent shunting of blood from the right to the left atrium, especially in the context of increased right-sided filling pressures, with risk of paradoxical embolism. We describe a 69-year-old woman presenting with acute chest pain, severe dyspnoea, and acute inferolateral ST-segment elevation on the electrocardiogram. The patient was diagnosed with myocardial infarction and failure of the right cardiac ventricle, which was considered to be secondary to extensive pulmonary embolism leading to increased filling pressures and paradoxical coronary embolism. The patient underwent emergent percutaneous interventions with coronary thrombus extraction and pulmonary thrombus fragmentation and local thrombolysis. The patient was free of symptoms at follow up 6 months later and echocardiography showed substantially improved right ventricular function. We discuss issues related to the diagnosis, treatment, and secondary prevention for patients with concomitant pulmonary and coronary arterial thrombosis.
|
|
| 22. |
|
|
| 23. |
- Wichman, Heather J, et al.
(författare)
-
Interventional treatment of mesenteric venous occlusion.
- 2014
-
Ingår i: Polish Journal of Radiology. - 1733-134X. ; 79:Jul 30, s. 233-238
-
Tidskriftsartikel (refereegranskat)abstract
- Mesenteric venous thrombus may be an incidental finding during imaging studies and asymptomatic patients are treated conservatively or with anticoagulant therapy only. Patients with symptomatic acute thrombosis causing bowel ischemia require urgent treatment, which frequently includes extensive surgery. Interventional treatment may be an alternative.
|
|
