Sebaceous carcinoma (SEB) is the most important malignant tumor of the eyelid. Early diagnosis and proper treatment significantly improve the outcome. SEB should be differentiated histopathologically from basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). In this study, the expression of androgen receptor (AR) in SEB, SCC, and BCC was evaluated. AR was positive in all 19 SEB cases. Of 18 BCCs, 6 (33%) showed focal nuclear immunoreactivity. The 18 SCCs showed no nuclear immunoreactivity. AR is a sensitive marker for SEB, especially in less differentiated tumors. Along with other markers and morphologic features, AR can be helpful in the diagnosis of SEB and its differentiation from SCC and BCC.
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