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 Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com Oral Melanotic Macule: Symptoms and Treatment Skinsight Figure 1 from Oral melanotic macule a case report. Semantic Scholar Pigmented Lesions Pocket Dentistry