Percutaneous transluminal angioplasty (PTA) was performed in 49 cases in department of Radiology, Seoul National university Hospital for 5 years from July 1984 to June 1989. Total angioplasty sites were 61 vascular lesions ; 28 renal arteries including 7 bilateral lesions, 11 iliac arteries, 7 membraneous obstructions of inferior vena cava, 5 abdominal aortas, 5 post-op. stenoses, 3 arteries of lower extramities and 2 subclavian arteries. in these 49 patients, over-all initial success rate was 83%. Among the 32 patients who was followed one to four years after PTA, 22 showed evidences of patency, suggesting 69% one-year patency rate. For the 21 patients of renovascular hypertension, initial success rate was 81% and one-year patency rate was 64%. for the 11 patients of iliac artery stenosis, initial success rate was 100% and there was no evidence of recurrence. Though the distribution of vascular disease in Korea seems to be different from those in western countries, our favora le result of PTA makes one expect good prevalence of this procedure in the future for stenotic vascular lesions in this country.