Clostridial mycotic aneurysm of the thoracoabdominal aorta--a case report.

Clostridial infection of the aorta is a rare and life-threatening condition. The management of a mycotic aneurysm involving the thoracoabdominal aorta due to Clostridium septicum infection is presented. Successful surgical management of the aortic infection involved arterial resection, wide debridement of the surrounding tissues, and in situ graft replacement. Sixteen additional cases of clostridial infection of the aortoiliac segment reported in the literature are also summarized. In ten of these 17 cases, an associated colonic adenocarcinoma was documented.