Autopsy findings. A Adhesion was seen between aortic wall and third portion of the duodenum. B Aorto-enteric fistula involving the third parts of the duodenum was seen in the soft tissue. C The fistula was just above the sutured site of aortic replacement. The graft wall was preserved but dirty soft tissue and thrombus was seen between the graft wall and aneurismal wall. No peritoneal or retroperitoneal hemorrhage was seen.