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 (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production Focal melanocytic lesions of the oral mucosa: An epidemiological and morphological study Santana 2023 Oral Diseases Wiley Online Library Histopathology of Oral Hyperplastic and Neoplastic Lesions Springer Nature Link Pathology Outlines Melanotic macule Multifocal pigmented lesions in the maxilla Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology