Appendiceal intussusception as a manifestation of mucinous cystadenoma of the appendix: an interesting clinical entity.

In children, intussusception is a common cause of intestinal obstruction. In contrast, intussusception in the adult is an infrequent cause of intestinal obstruction and in the majority of instances has some obvious cause such as a tumor forming the lead point of the intussusceptum. Diagnosis is suggested by chronic, intermittent symptoms of intestinal obstruction, the presence of an abdominal mass, and the passage of blood per rectum. In contrast to children, treatment is invariably surgical resection without reduction. We have encountered an appendiceal intussusception as a manifestation of a mucinous cystadenoma of the appendix. There was no evidence of pelvic visceral involvement. This unique presentation is rarely reported. The patient underwent uneventful laparoscopy-assisted segmental ileocolonic resection with stapled anastomosis. An analysis of our diagnostic and therapeutic approach, as well as a review of appendiceal pathology as a cause of intussusception are presented to better understand this rare clinical entity.