Spontaneous expulsion of lipoma per rectum occurring with colonic intussusception.

Abstract

The spontaneous expulsion of lipoma per rectum is an extremely rare phenomenon. The present case report describes this event in a patient with lower abdominal pain and bleeding per rectum leading to exploratory laparotomy. At surgery, a large intussuscepting ulcerated submucosal lipoma remnant was identified in the transverse colon. This unusual presentation of colonic lipoma is discussed and the pertinent literature is reviewed.