Abstract
An 87-year-old man who developed abdominal pain and distension was brought to our hospital by ambulance. On admission, abdominal CT showed partial thickening of the wall of the small intestine and the presence of mesenteric venous gas ; portal venous gas was detected in the liver 5 hours later. Enhanced CT showed patency of the superior mesenteric artery. Ischemic disease of the small intestine was suspected and an emergency laparotomy was performed. Segmental redness and wall thickening of the ileum suggesting ischemic change was observed, but pulsation of the mesenteric arteries was good. Approximately 40 cm of the ileum was resected. Histopathological analysis showed acute ischemic changes, suggesting nonocclusive mesenteric ischemia. The postoperative course was uneventful, and the patient was discharged on the 19th day after the operation.