Figure 1. Histologic findings of anogenital mammary-like glands. (A) Simple or complex glands lined by luminal columnar epithelium surrounded by myoepithelial cells in fibrocellular stroma (H&E, × 100). Focal expression of CK5 (B) in both luminal and myoepithelial cells is found. CD10 (C) and p63 (D) immunostaining was positive in myoepithelial cells.