Inferior mesenteric artery aneurysm: case report and literature review.

A 70 year old man presented with retrosternal and epigastric pain. He was in shock. The diagnosis on admission was acute myocardial infarction. CT scan of the abdomen showed coeliac and superior mesenteric artery (SMA) occlusion. In addition there appeared to be large collateral from the inferior mesenteric artery (IMA) with a retroperitoneal collection. He underwent emergency laparotomy and a ruptured IMA aneurysm was detected. The aneurysm was excised and the IMA was ligated. He developed progressive multi-system organ failure post operatively. We discuss the aetiology, presentation, diagnosis and treatment of IMA aneurysms.