A case of Endometrioid endometrial adenocarcinoma with synchronous low-grade Appendiceal mucinous neoplasm and Pseudomyxoma peritonei

Pseudomyxoma peritonei (PMP) is a rare condition usually associated with ruptured low-grade mucinous neoplasm of the appendix. Rarely, PMP can originate from mucinous adenocarcinoma of the ovary. However, the coexistence of adenocarcinoma of the endometrium and appendiceal mucinous neoplasm has not been reported. We present the case of a post-menopausal woman with endometrioid endometrial adenocarcinoma with unexpected low-grade appendiceal mucinous neoplasm and PMP.