Rare mitoses were seen,however,there was no obvious atypia and necrosis. Tumor cells were positive for AE1/AE3,MLH1 and MSH2,and negative for CgA,Syn and NSE. Tumor cells with sebaceous cell differentiation were positive for EMA.

• 免疫表型:肿瘤细胞AE1/AE3、MLH1、MSH2、皮脂腺细胞EMA均阳性,CgA、Syn、NSE均阴性。