肺脏类癌脑转移

 我想这是一例转移的细支气管肺泡癌。

Although metastasis is the preferred possible diagnosis, the exact type and origin of malignancy are not very straight forward. The neoplastic cells seem to have a striking papillary architectural growth pattern and are associated with abundant hyalinized material - likely collagen or basement membrane material. I don't think this is a choroid plexus neoplasm, papillary glioneuronal tumor, or ependymoma. Metastatic adenocarcinoma with papillary growth pattern is my diagnosis. Immunohistochemical stains (TTF-1, AE1, S100, sm muscle actin, high molecular weight keratin 34betaE12) are required for further investigation of its primary origin.

 免疫组化顺序为CK5/6 CK7 CK20 EMA GFAP S-100，马老师提的其他标记过两天出来后再上传，谢谢马老师