Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com PDF] Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis. Semantic Scholar Pigmented Lesions of the Oral Mucosa Pocket Dentistry Oral melanotic macule Mcula melantica oral Mariana Villarroel Dorrego Oral Mucosal Melanosis IntechOpen 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