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 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 Oral Melanotic Macule: Symptoms and Treatment Skinsight PDF) Labial Melanotic Macule Diagnosed by Dermoscopy Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update Pigmented Lesions of the Oral Mucosa Pocket Dentistry