Appendiceal mucocele presenting as a right adnexal mass: Case report

Abstract

Mucocele of vermiform appendix is a rare entity that may mimic a righ-sided adnexal mass. It is formed by cystic dilatation, abnormal mucinous secretion of the appendiceal lumen. Here we aimed to report case of appendiceal mucocele. 54-year-old postmenopausal woman was admitted with a right lower abdominal pain to our clinic. Pelvic and ultrasonographic examinations revealed a mass arising from adnexal area on the right side extending for about 3x5 cm. The serum CA 125 level was within normal limit (CA 125:14). Computerize tomography identified same diagnosis. During the laparotomy the right adnexal mass was appendiceal in origin and appendectomy was performed. Histology confirmed a diagnosis of appendiceal mucocele. Various radiological tools including ultrasound, computer tomography scan, magnetic resonance imaging may be useful for the diagnosis of appendiceal mucocele. But pre-operative diagnosis is difficult and it is diagnosed incidentally. Although appendiceal mucocele is a rare entity it should be considered in the differential diagnosis of adnexal masses.