Abstract
A 64-year-old woman was referred to our hospital because of sudden abdominal pain and vomiting. A fist -size tumor was palpated in the right lower quadrant. An abdominal computed tomography (CT) examina-tion demonstrated a target-like appearance in the ascending colon, and the presence of a fat-density lesion A colonoscopy revealed the presence of dark red invaginated ileal mucosa in the ascending colon. The patient was diagnosed as having intussusception caused by an ileal lipoma, and an emergency operation was performed. The tumor was located 31cm proximal to the ileocecal valve, and a histological examination confirmed the tumor to be a benign lipoma. We suggest that abdominal CT and colonoscopy are useful procedures for the preoperative diagnosis of adult intussusception.
