1,720,991 research outputs found
Percutaneous sonographically guided radiofrequency ablation of medium-sized fibroids: feasibility study
No full textOBJECTIVE. The purpose of this study was to assess the feasibility and safety of percutaneous radiofrequency ablation under sonographic guidance as a unique procedure in the management of symptomatic uterine myomas.
SUBJECTS AND METHODS. Six premenopausal women with symptomatic submucosal or intramural uterine myomas underwent percutaneous radiofrequency ablation under suprapubic sonographic guidance. Relief of symptoms and reduction in the diameter and volume of the myomas were measured every 3 months.
RESULTS. The location of myomas was anterior and submucosal in one of the six patients and intramural in the other five (one posterior, one anterior, two fundal, and one on the left side). Five of the patients had pelvic pain, and four had menorrhagia. The median baseline diameter was 4.8 cm (range, 4.4 - 5.2 cm), and the mean volume was 58.57 cm(3) (range, 44.58 - 73.58 cm(3)). The mean follow-up time was 9 months (range, 3 - 12 months). At follow-up, the median diameter was 2.3 cm (range, 1.20 - 3.2 cm), and the median volume was 8.97 cm(3) (range, 0.90 - 18.81 cm(3)). The median preoperative symptom score was 47.2 ( 31.8 - 67.30), and the median health-related quality of life (QOL) score was 63.92 (37.20 - 86.00). The median symptom score during follow-up was 5.15 (range, 0 - 26), and the mean QOL score was 96.2 (range, 86.30 - 100). Four of six patients were symptom-free at the last follow-up visit.
CONCLUSION. Percutaneous sonographically guided radiofrequency ablation alone is a feasible and efficient procedure in the management of medium-sized uterine myomas
Contrast-Enhanced Ultrasonograpic Findings in Pancreatic Tumors
Full text linkOBJECTIVE: The purpose of this article is to present the potentials and limits of contrast-enhanced ultrasonography (CEUS) in the characterization of pancreatic tumors, usually hypoechoic or cystic at B-mode ultrasound. CONCLUSION: As regards hypoechoic lesions at B-mode ultrasound, CEUS often can distinguish among adenocarcinoma, islet cell tumor and serous microcystic adenoma. As regards cystic lesions, CEUS in most cases doesn't add significative diagnostic information; therefore CT, MR or endoscopic US are almost always necessary for their proper characterization
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Endovascular treatment of femoro-popliteal aneurysms
No full textInternational Symposium on Endovascular Therapy (ISET
The role of interventional radiology in the management of kidney transplant complications = Ruolo della radiologia interventistica nel trattamento delle complicanze del trapianto renale
No full textPurpose. To evaluate the role and the effectiveness of interventional radiology in the treatment of renal transplant complications.
Materials and methods. From 1996 to 2004 a total of 288 kidney transplants from cadavers were performed in our Institute. The kidney was always collocated in iliac fossa by creating a vascular anastomosis with the external iliac artery and vein; in all cases the ureter was implanted into the recipient bladder. During the follow-up, 34 complications were observed. Twenty-seven complications in 25 patients (20 males and 5 females; age 35-65 years) were treated by a radiologic procedure: 9 renal artery stenosis and 1 native external iliac artery stenosis (by PTA), 5 ureteral obstructions (by nephrostomy and ureteral stenting), 8 ureteral leaks (by nephrostomy, in 2 cases associated to ureteral stenting) and 4 limphoceles (by percutaneous ultrasound-guided catheter drainage).
Results. Primary technical success was obtained in 20/27 cases (74%). Success was obtained with a second interventional procedure in 3/27 cases, 2 limphoceles and I ureteral fistula (secondary technical success: 85.2%), with a clinical final success in 23/27 cases (85.2%). We observed a peri-procedural complication rate of 3.7% (1 renal artery post-PTA dissection during a restenosis treatment). Four cases (1 renal arterial post-PTA dissection, I ureteral obstruction, I ureteral leak and 1 limphocele) needed a surgical correction (14.8%).
Conclusions. Interventional radiology is the first therapeutic approach to treat renal transplant complications, It shows good technical and clinical results and a low complication rate. Surgery had to be considered only if minimally invasive procedures are infeasible or ineffective
A case of gastroduodenal artery aneurysm in a HIV-positive patient treated by combined percutaneous thrombin injection and endovascular coil embolization
No full textFirst described in 1989, HIV-related aneurysms have been rarely reported. Considered atypical if compared to classic atherosclerotic diseases, they show no preferred location and frequently involve young patients with no other risk factors for atherosclerosis but with an impaired immune system. They are probably related to an auto-immune damage inside the aortic wall associated with a necrotizing perivasculitis. Visceral artery aneurysms are rare and life-threatening diseases; the superior mesenteric and gastro-duodenal and pancreatic vessels are rarely involved. The advantages related to the endovascular approach to these aneurysms seems to be even more effective in immuno-impaired patients (i.e. HIV+). We report a case of a young patient affected by a HIV-related gastroduodenal artery aneurysm which was treated with a combined percutaneous and endovascular approach
Cutting Balloon angioplasty in the treatment of dialytic arterio-venous fistulas stenosis
No full textMultidisciplinary European Endovascular Therapy (MEET
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