PMC7283092_01
Histological features of adenomyoepithelioma with carcinoma exhibiting biphasic pattern of tubules lined by luminal epithelial and outer myoepithelial layers showing nuclear pleomorphism and mitosis (H&E in A, B and C). Immunohistochemical staining for P63 (D) and Ck5/6 (E) highlight myoepithelial layers while KI 67 (F) is about 30%.
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The tumor was triple negative for ER, PR and ER (Fig. 1).