摘要
目的探讨乳腺腺肌上皮瘤(adenomyoepithelioma,AME)的临床病理学和免疫表型特征。方法采用HE及免疫组化EnVision两步法对5例AME进行染色,并复习相关文献。结果 5例患者均为女性,年龄45~63岁(平均54岁)。镜下见肿瘤由增生的腺上皮和肌上皮组成,以肌上皮增生为主,多为梭形或透明肌上皮细胞。伴癌的AME中可见肿瘤呈浸润性生长,细胞丰富,异型性明显,核分裂象增多,肿瘤内有坏死。免疫表型:5例肿瘤腺上皮CK强阳性,EMA、ER、PR、SMA、p63、CD10、Calponin、CK5/6均阳性,肌上皮CK弱阳性,ER和PR均阴性。结论 AME为乳腺少见的良性肿瘤,由腺上皮和肌上皮共同增生形成。伴癌的AME更罕见,其恶性成分多为肌上皮,肿瘤转移少,转移者预后差。
引文
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