Intestinal intussusception in adults occurs infrequently. In this study we describe two cases of acute surgical events characterized by abdominal pain, masses and obstructive symptoms. One of these cases occurred in an 18 year old woman with jejuno-jejunal intussusceptions due to a hamartomatous polyp. The other case was a 40 year woman with a colo-colonic intussusception due to a submucosal lipoma in the descending colon.