Genital Lentiginosis: A Benign Pigmentary Abnormality Often Raising Concern for Melanoma MDedge Melanotic macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight in single basal melanocytes; NO nests. More info like this in Pigmented Lesions of the Vulva Dermatologic Clinics Early diagnosis of genital mucosal melanoma: how good are our dermoscopic criteria? Abstract Europe PMC Melanocytic Lesions of the Vulva Obgyn Key AD :: Annals of Dermatology