Perc utaneous transluminal angioplasty (PT A) was performed in 49 cases in Department ofRadiology, Seoul National University Hospital for 5 years from J uly 1984 to June 1989. Total angioplasty sites were 61 vascu lar lesions; 28 renal arte ri es including 7 bilateral lesions , 11 iliac arteries, 7 membraneous obstructions of inferior vena cava, 5 abdominal aortas, 5 post-op stenoses , 3 arte ries of lower extramities and 2 subclavian arte ries. In these 49 patients, over-all initial s uccess rate was 83 %. Among the 32 patie nts who was followed one to four years after PT A, 22 showed evidences of patency , suggesting 69 % one-year patency rate. For the 21 patients of renovascular hypertension, initi al success rate was 8 1 % and one-year patency rate was 64 %. For the 11 patients of iliac artery stenosis, initi al success rate was 100 % and there was no evidence of recurre nce. T ho ugh the distribution of vascular disease in Korea seems to be different from those in western countries , our favorable result of PT A makes one expect good prevalence of this procedure in the futu re for stenotic vascular lesions in this country. Pulseless disease 9 .625

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