[A case of right femoral anastomotic aneurysm accompanied by obstruction of left iliac and femoral artery].

The case was a 66-year-old man. Three years ago under a diagnosis of Arteriosclerosis obliterans he received: right aorto-femoral bypass grafting. This time left intermittent clandication was observed and we performed resection of aneurysm and femorofemoral cross over bypass grafting following a diagnosis of right aorto-femoral anastomotic aneurysm accompanied by obstruction of left iliac and femoral artery. Anastomotic aneurysm is one of the complications after prosthetic bypass grafting. In this paper we discussed the causes, precautions and treatment of anastomotic aneurysms.