Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Macular Pigmented Oral Mucosal Lesions: An Amalgam Tattoo Case Report Dentistry Today An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Frontiers Mucosal Melanoma: Pathological Evolution, Pathway Dependency and Targeted Therapy