Double Pathology: Malignant Epithelial Ovarian Tumor and Germ Cell Tumor (Choriocarcinoma), a Rare Coexistence

Gouthaman Shanmugasundaram, Elilnambi Sundaramoorthy, Suresh Sudalaiandi, Satish Srinivas Kondaveeti, Thanka Johnson, Rajendiran Swaminathan, Anita Ramesh

Abstract


Surface epithelial stromal tumors account for approximately 60% of all ovarian tumors and approximately 90% of all ovarian malignancies. Sex cord stromal tumors account for 7% of all malignant ovarian tumors. Germ cell tumors make up only 3-7% of malignant ovarian tumors. A combination of serous carcinoma of the ovary and choriocarcinoma is rare. Until today such combination has been documented only in six cases in the English literature. Here, we describe a case of ovarian serous carcinoma, where histopathology revealed a combination of serous carcinoma with adjacent choriocarcinoma component in the extraovarian peritoneal deposits. A 64-year-old post-menopausal female was diagnosed to have stage IV ovarian cancer. She received six cycles chemotherapy. Subsequently she underwent optimal cytoreductive surgery. Microscopically, monomorphic histology (serous carcinoma) was noted in both the ovaries and dimorphic histologies (serous carcinoma and choriocarcinoma) in the sigmoid mesocolon nodule, omentum and left subdiaphragmatic nodules. Metronomic chemotherapy continued and patient is on regular follow-up for the past 1 year with stable disease. Recognition of choriocarcinomatous components in ovarian carcinomas is important because of its association with aggressive behavior. In spite of the aggressive histology, the patient is surviving for the past 1 year. Different chemotherapeutic regimens have been used in cases of mixed choriocarcinoma and carcinoma, but established chemotherapeutic regimens have not been described. Chemotherapeutic regimens that target both components have been advocated and used. The absence of choriocarcinoma in ovarian primary and its presence in the extraovarian peritoneal deposits have not been described in the English literature so far. This case is being presented for its rarity.




World J Oncol. 2015;6(4):421-425
doi: http://dx.doi.org/10.14740/wjon848w


Keywords


Epithelial ovarian carcinoma; Choriocarcinoma; Germ cell tumor

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