Abstract
A 36-year-old man, who had recurrent bouts of lower abdominal pain and treated with a diagnosis of intestinal obstruction at another hospital since January, was referred to the hospital because of lower abdominal pain lasting for 4 days on September 3, 2004. The patient was admitted with a suspicion of intestinal obstruction on the same day. Abdominal CT scan showed thickening of the terminal ileum. A laparoscopy-assisted operation was performed to clarify the cause and treat the recurrent abdominal pain on September 6. Laparoscopic findings included thickening of wall of the terminal ileum and pus from the mesenterium. Abscess formation of the ileal mesenterium was diagnosed and an ileo-cecal resection was carried out. The resected specimen showed a diverticulum of the ileum about 2cm distal from the ileocecal valve and mesenteric abscess. Histopathological study revealed a false diverticulum penetrating the proper muscular layer of intestine with abscess formation of the mesenterium. The postoperative course was uneventful and the patient was discharged from the hospital on the 13th hospital day.