Abstract
We report 2 cases of colon intussusception caused by mucocele of the appendix in adults. The first patient was a 25-year-old man who complained of epigastric pain. CT revealed invagination of a colon tumor (2 cm in diameter) ; therefore, we performed emergency surgery. During surgery, the appendix was enlarged and fitted to the anterior part of the root of the ascending colon. We resected the ileocecal region, and the pathological diagnosis was mucinous adenocarcinoma of the appendix. The second patient was a 21-year-old woman who complained of right lower quadrant abdominal pain. CT showed torsion of the mesentery surrounding a cystic mass in the left lower abdomen. During surgery, we found a cystic mass in the hepatic flexure. The intussusception was released easily, and eventually the cystic mass was located in the ileocecal region. For this reason, we diagnosed her with intussusception of mucocele of the appendix. We resected the ileocecal region, and the pathological diagnosis was mucinous adenoma of the appendix. It is rare for intussusception to develop because of mucocele of the appendix. The findings reported here indicate that mucocele of the appendix should be considered when intussuception is detected in adults.
