Ovarian sertoliform endometrioid adenocarcinoma: A rare variant which causes diagnostic pitfalls

Abstract

Sertoliform endometrioid carcinoma (SEC) is a rare variant of endometrioid adenocarcinoma, which causes diagnostic pitfalls due to its morphologic resemblance of sex cord stromal tumors. Herein, we report a case of SEC in the ovary almost all of which consisted of sex-cord like areas and was presumed to be a sertoli cell tumour initially. Immunohistochemical features incompatible with sertoli cell tumour were alerting and extensive sampling revealed a focal component of classical endometrioid carcinoma with anastomosing cribriform areas of more columnar cells. The final diagnosis was sertoliform endometrioid adenocarcinoma. This entity should be kept in mind for all the pathologists and gynaecologic oncologists. Sampling such tumours extensively and confirming the diagnosis by immunohistochemistry using a large antibody panel is requisite for the correct diagnosis and preventing the patient from inappropriate therapies.