Mucinous appendicular cystadenocarcinoma and pregnancy.

Primary appendicular adenocarcinoma is rare. We report an unusual mucinous appendicular adenocarcinoma during pregnancy. To our knowledge, this is the second reported case in the literature. A mucinous appendicular cystoadenocarcinoma was discovered unexpectedly and coincidentally during a cesarean section performed in term pregnancy. An appendectomy was simultaneously performed, followed by a right hemicolectomy. Given the exceptionally low incidence tumors co-existing with pregnancy, we recommend a careful and complete appendix examination during cesarean and postpartum sterilization, and subsequent removal of tumors should they exist.