Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Oral melanoacanthoma of the palate: An unusual presentation of an uncommon entity JAAD Case Reports 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 Can a black pigmented lesion of the oral cavity predict future development of melanoma Report of a case and review of literat Pathology Outlines Melanotic macule