MUC1 and epithelial neoplasm: Although the lack of epithelial membrane antigen (EMA) immunostaining helps to distinguish these tumors from epithelial neoplasms, immunohistochemistry is not very helpful, as it does not allow the distinction between entities of this category, since all can express the sex cord–stromal immunomarkers (inhibin, calretinin, melanA, steroidogenic factor 1 (SF1), Wilms tumor 1 (WT1), and forkhead box L2 [FOXL2]), except for steroid tumors that usually do not express FOXL2 [8,14].