Reactive hyperplasias,precancerous and malignant lesions of the oral mucosa Krahl 2008 JDDG: Journal der Deutschen Dermatologischen Gesellschaft 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 Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis 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 Oral melanoacanthoma of the palate: An unusual presentation of an uncommon entity JAAD Case Reports