Mesonephric-Like Carcinosarcoma of the Ovary Associated with Low-Grade Serous Carcinoma: A Case Report

Author:

d’Amati AntonioORCID,Pezzuto FedericaORCID,Serio GabriellaORCID,Marzullo Andrea,Fortarezza FrancescoORCID,Lettini TeresaORCID,Cazzato GerardoORCID,Cormio GennaroORCID,Resta LeonardoORCID

Abstract

Mesonephric adenocarcinomas are rare tumors of the female genital tract, thought to arise from embryonic mesonephric remnants, primarily in the cervix and vagina. Conversely, endometrial and ovarian mesonephric adenocarcinomas may have a different pathogenesis, probably originating from transdifferentiated Müllerian carcinomas, as demonstrated by the association of these neoplasms with endometriosis and ovarian serous tumors. For this reason, in the endometrium and in the ovary, they are defined as “mesonephric-like adenocarcinomas”. Some cases of mesonephric carcinomas of the female genital tract have been reported to show a sarcomatous component and have been defined as “mesonephric carcinosarcomas”, characterized by poor prognosis and high metastatic behavior, but this entity has never been described in the ovary. The case herein presented is of a 74-year-old female with abdominal discomfort and a complex ovarian mass. Histological and immunohistochemical analysis showed features of ovarian mesonephric-like carcinoma combined with a low-grade serous component, in support of the theory of a Müllerian origin of these neoplasms. The tumor also revealed foci of chondrosarcomatous differentiation, never before reported in the ovary, showing a similar immunohistochemical profile to the mesonephric-like elements. This work thus describes the first reported case of ovarian mesonephric-like carcinosarcoma.

Publisher

MDPI AG

Subject

Clinical Biochemistry

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