Ovarian endometrioid tumors mimicking Sertoli and XXXX : Sertoliform variant of @entity4348 .

@entity1 @entity10693 @entity5 @entity1544 @entity3558 @entity3 @entity4348
We have encountered four cases of an unusual variant of well-differentiated @entity4348 that was predominantly composed of tubules, solid or hollow, as well as cord-like areas histologically mimicking Sertoli and @entity10693 . The two features most helpful in differential diagnosis were the presence of areas of @entity5 with the typical confluent pattern of @entity4348 , and the presence of @entity3558 at the apical borders of the @entity5 cells and/or within glandular lumina. Other features that were helpful if present, but were observed only in one case each, were foci of @entity1544 or the presence of ciliated epithelium. In two cases, ultrastructural studies showed well developed microvilli and perinuclear microfilaments confirming the endometrioid nature of the @entity5 . The @entity1 varied from 22-74 years in age. All @entity5 were confined to a single ovary, and no @entity5 is known to have recurred or metastasized. One of the @entity1 died at age 80, six years following operation, presumably without evidence of recurrent @entity5 or @entity3 . Two other @entity1 are living and well, one and 14 years after diagnosis. In one @entity1 follow-up is short. The clinicopathologic features of this variant of @entity4348 are reviewed with emphasis on differential morphologic features.
