Non-atherosclerotic saccular aneurysmal degeneration of a saphenous-vein graft inserted for repair of a popliteal aneurysm.

The Authors describe a case of a saccular aneurysm formation in a femoropopliteal autologous saphenous vein graft, inserted 12 years before. The patient was initially treated for a popliteal aneurysm. The graft revealed no microscopic signs of atherosclerosis. In spite of the widespread use of the autologous saphenous vein as arterial substitute, this complication is extremely rare.