Abstract
A 79-year-old woman suffering from anemia was diagnosed endoscopically as 1 type cecal advanced cancer measuring 3cm in diameter. Abdominal CT examination showed 4cm mass at the root of the mesenterium. Ileocecal resection was performed, and the tumor at the top of the appendix had invaginated into the cecum completely. Histopathological examination revealed well differentiated adenocarcinoma, and the mucinous carcinoma at the center of the lesion invaded to the inverted serosal surface. Peritoneal tumor by biopsy demonstarated mucinous carcinoma, and was diagnosed as peritoneal dissemination. We experienced an extremely rare case of appendiceal carcinoma invaginating into the cecum associated with localized peritoneal dissemination.
