Abstract
The patient was a 74-year-old man with complaints of abdominal pain and melena. At first, an abdominal CT showed a completely encircled wall thickness from the descending colon up to the rectum. The patient was admitted to our hospital with the diagnosis of ischemic colitis. Then shock suddenly occurred. A repeated CT showed hematoma in the abdominal cavity. We preoperatively diagnosed him as a case of ruptured aneurysm in the abdominal artery. An emergency operation was done. The origin of the bleeding was the aneurysm in the middle colic artery, and hemostasis was done by ligation. No colon resection was done because his condition was good. The patient was discharged from the hospital on the 13th postoperative day. This was a case of a ruptured aneurysm in the middle colic artery presenting with symptoms of ischemic colitis and hemorrhagic shock. But the hemostasis was done promptly, and lifesaving was possible after laparotomy.
