[Methods and results of treating late thrombosis of vascular grafts caused by fibromuscular lesions of vascular anastomosis].

In the years 1989-1991 at the I Chair and Department of Surgery, II Faculty, Medical Academy in Warsaw, 56 patients were treated with vascular graft thrombosis. The studies involved patients in whom thrombosis developed between 3 and 24 months after the operation. Hyperplasia of the vascular anastomosis was the cause of the occlusion. The purpose of the work was determination of therapeutic methods and results. It was found that hyperplasia led to vascular graft occlusion in some patients even with very good early results. The treatment of thrombosis should be surgical. The methods giving the best results were thrombectomy and angioplasty of distal anastomosis or graft exchange.