Figure 1.

Photographs of a luminal B subtype of male breast cancer with H&E immunohistochemical stains. The luminal B tumor demonstrated histologic features of (a) invasive ductal carcinoma with high nuclear grade. The tumor showed (b) strong membraneous stain (3+) of human epidermal growth factor receptor 2 (HER2), (c) diffuse cytoplasmic staining of epidermal growth factor receptor (EGFR), and (d) nuclear staining of nuclear factor-κB (NF-κB).