Nikolaos C. Christeas

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PURPOSE Ureteral patency in malignant ureteral obstruction cases is a therapeutic challenge. We report our long-term experience with palliative treatment for extrinsic malignant ureteral obstruction with percutaneous placement of metal mesh stents. MATERIALS AND METHODS From January 1996 to December 2005, 90 patients with a mean age of 59 years (range 35(More)
PURPOSE To report the 6-month results of a prospective randomized trial investigating angioplasty with paclitaxel-coated balloons (PCB) vs. plain balloon angioplasty (BA) for the treatment of failing native arteriovenous fistulae (AVF) or prosthetic arteriovenous grafts (AVG). METHODS The enrollment criteria for this non-inferiority hypothesis trial(More)
PURPOSE To report the midterm (<or=1 year) angiographic and clinical outcomes of a prospective study investigating the infrapopliteal application of paclitaxel-eluting stents (PES) in patients with critical limb ischemia (CLI). MATERIALS AND METHODS Infrapopliteal angioplasty was chosen as first-line therapy in patients with unilateral or bilateral CLI(More)
OBJECTIVE The purpose of the present study is to compare the standard bare metal stents (BMS) with the Paclitaxel-Drug Eluting Stent (DES) in the ureter of a pig model. MATERIALS AND METHODS We report on an experimental study with ten female pigs weighing between 25 and 30 kg. The stents were randomly placed in either the right or left ureter in each of(More)
BACKGROUND A well-established method to preserve failing synthetic arteriovenous grafts (AVGs) dialysis accesses is percutaneous transluminal angioplasty (PTA). Nevertheless, the one-year primary patency rate following PTA is approximately 25%. This study was designed to compare the angiographic and clinical outcomes following stent-graft insertion versus(More)
The purpose of this study was to investigate the immediate and long-term results of cryoplasty versus conventional balloon angioplasty in the femoropopliteal artery of diabetic patients. Fifty diabetic patients (41 men, mean age 68 years) were randomized to cryoplasty (group CRYO; 24 patients with 31 lesions) or conventional balloon angioplasty (group COBA;(More)
Splenic arteriovenous fistula (SAVF) accounts for an unusual but well-documented treatable cause of portal hypertension([1-4]). A case of a 50-year-old multiparous female who developed suddenly portal hypertension due to SAVF formation is presented. The patient suffered from repeated episodes of haematemesis and melaena during the past twelve days and thus(More)
We report a case of a 74-year-old woman with a 16-year history of a double bilo-enteric anastomosis due to resected hilar cholangiocarcinoma (Type IIIb Klatskin tumor). The patient presented with cholangitis secondary to benign anastomotic stenosis which resulted in a large intrahepatic biloma. In order to restore the patency of the anastomosis and overcome(More)