Serous Cystadenoma and Fibrothecoma: A Rare Combination in Collision Tumor of Ovary with Pseudo-Meigs Syndrome.

Abstract

Collision tumors are best considered as separate primary neoplasms. These tumors have been reported in various organs, such as the esophagus, stomach, liver, thyroid gland, ovary, and lung, but they are extremely rare in the ovaries [1]. The majority of these tumors are a collision between carcinomas and sarcomas or lymphomas, and rarely between two types of carcinoma [2]. The most common histological combination of collision tumor in the ovary is the coexistence of teratoma with mucinous tumors (mucinous cystadenoma or carcinoma) [1]. Here we report a very unusual combination of fibrothecoma and serous cystadenoma in the left ovary of an elderly woman who presented with an abdominal lump and ascites.