Multilocular Intrauterine Cystic Mass, Atypical Presentation of Endometrial Stromal Sarcoma: a Case Report

Endometrial stromal sarcoma (ESS) is a rare neoplasm comprising only 0.2% of all uterine malignancies and 15-26% of primary uterine sarcomas. Pathology of the tumor was described as soft, fleshy, smooth polypoidal mass, which may protrude in the uterine cavity. This case report, represent atypical presentation of ESS as multilocular cystic intrauterine mass, which can be misdiagnosed as multilocular ovarian cyst.