Mucosal melanocytic macules Lentigo pathology Focal melanocytic lesions of the oral mucosa: An epidemiological and morphological study Santana 2023 Oral Diseases Wiley Online Library 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 The Pigmented Hard Palate: A Long Term Outcome of Imatinib Actas Dermo Sifiliogrficas Melanoma in situ of the oral mucosa in an adolescent with dysplastic nevus syndrome Journal of the American Academy of Dermatology