Concomitant Bifocal Urothelial Carcinoma and Breast Tumor: Second Primary Cancer or Metastatic Spread to the Breast?

Figure 2

Breast tumor. (a) Biopsy specimen (staining with H&E, original magnification x200). (b) HER2 overexpression (3+) of tumor cells detected by immunohistochemistry (immunoperoxidase staining, primary monoclonal anti-HER2 antibody (clone CB11), original magnification x200).

(a)

(b)