Diagnosis of oral pigmentations and malignant transformations ScienceDirect Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Oral Melanotic Macule: Symptoms and Treatment Skinsight Mucosal melanocytic macules 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 Mucosal Melanosis IntechOpen