[Preoperatively as adnexa tumor diagnosed mucocele of the appendix]

In a 51 year old woman a cystic in the right lower abdomen was diagnosed by ultrasound. The patient underwent laparotomy assuming the tumor to be a right adnexal mass. Intraoperatively, a pathological appendix was found. Histologic evaluation of the appendix showed a mucinous cystadenoma with mucocele.