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 cystoadeno
carcinoma was discovered unexpectedly and coincidentally during a cesarean
section performed in term pregnancy. An appendectomy was simultaneously per
formed, followed by a right hemicolectomy. Given the exceptionally low inci
dence tumors co-existing with pregnancy, we recommend a careful and complet
e appendix examination during cesarean and postpartum sterilization, and su
bsequent removal of tumors should they exist.