Non-ulcerative basal cell carcinoma arising on the genitalia.

We report two cases of basal cell carcinoma (BCC) arising on the genitalia. The first case was a 49-year-old male who became aware of a dull erythematous plaque with a keratotic surface on his scrotal skin, and the second case was a 44-year-old female suffering from a keratotic plaque on her right vulvar region. Neither lesion was ulcerative. Both were resected under local anesthesia following a clinical diagnosis of angiokeratoma for the former and seborrheic keratosis or BCC for the latter lesion. Histopathological study revealed that both lesions were BCC. Many questions regarding the pathogenesis of BCC still remain to be clarified. Because most of the reported cases have been ulcerative lesions and the genital region is an uncommon site for BCCs, caution should be taken in cases in whom a clinically non-ulcerative tumor suspected to be angiokeratoma or seborrheic keratosis arises in this region.