Mucinous Cystadenocarcinoma of the Appendix with Intussusception in the Descending Colon

Abstract

A 34-year-old woman presenting with left upper abdominal pain came to our hospital. Computed tomography scan showed intussusception in the descending colon induced by a cystic tumor of the appendix. Gastrografin enema repositioned the cystic tumor to the cecum, but, the intussusception was not completely reduced. Laparoscopy-assisted ileocecal resection and regional lymph node dissection were performed without complete reduction of the intussusception. During the laparoscopic surgery, we paid close attention to avoid intraperitoneal dissemination of neoplastic cells and mucoid material. The pathological diagnosis was mucinous cystadenocarcinoma of the appendix (SI ly1 v0 N0) which was invading the submucosal layer of the cecum. In this case, complete reduction of the intussusception may have caused pseudomyxoma peritonei. It is possible to perform laparoscopic surgery to treat mucinous cystadenocarcinoma of the appendix with intussusception. It is not necessary to reduce the intussusception completely when it is induced by cystadenocarcinoma of the appendix.