A CASE OF INTESTINAL INTUSSUSCEPTION CAUSED BY LIPOMA DIAGNOSED PREOPERATIVELY

Abstract

In this paper, we report a case of intestinal intussusception caused by a lipoma of the ileum in an adult, whose diagnosis was made preoperatively by ultrasonography (us) and computed tomography CT. A 67-year-old man was admitted to the hospital because of abdominal pain and anal bleeding. Physical examination revealed a hardmass in the right lower abdomen. The mass was movable, and with tenderness. Abdominal us showed a 1.6cm mass surrounded by hyperechoic and hypoechoic layers (multiple concentric ring sign). Abdominal CT showed a stratifotrm low density tumor surrounded by various concentric layers in the ascending colon. Barium enema showed a coiled spring sign in the ascending colon. Based on these results the diagnosis of intestinal intussusception of the small intestine caused by a lipoma was made. Upon laparotomy the diagnosis of intussusception of the smal intestine caused by a limpoma was made. Upon laparotomy the diagnosis of ileum-colon type antegrade intussusception was confirmed, and an ileal tumor of 1.5×1.5cm, located 60cm from the Bauhin valve was disclosed. A partial resection of the ileum was performed. The resected material showed a polypoid tumor 1.5×1.5cm in size. Histopathologic ally, it revealed typical features compatible with the diagnosis of benign lipoma.