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This is my collegure's case. Myoepithelial marker stains were not performed even though I think it is reasonable to do the stain. However you check the ae1/ae3 stain carefully, you will notice the pattern like invasive cancer, but not like sclerosing adenosis. I agree with most of you. It may be a lobular cancer. But it is not easy to interpretation of e-cad and p120 stains in this inflammatory background. So the case was released as invasive mammary carcinoma. The detailed type is defered for further evaluation.
免疫组化判读:
导管癌(或正常导管): E-cadherin和p120均呈膜阳性。小叶病变:E-cadherin不着色(或比对照减弱),p120胞浆强阳性。
参见Dr.cqzhao以前的教学病例:http://www.ipathology.com.cn/forum/forum_display.asp?classcode=129&keyno=111923&pageno=2
14楼图2 E-Ca弱阳性(不是完整的膜阳性),而p120胞浆强阳性。因此更可能是小叶癌。HE形态确实很难判断,免疫组化没看到肌上皮标记物之前,还不敢下结论。
谢谢Dr.cqzhao!
华夏病理/粉蓝医疗
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