Benign Pigmented Lesions and Malignant Melanoma Plastic Surgery KeyPlastic Surgery Key Mucosal melanocytic macules Figure 2 from Oral melanotic macule a case report. Semantic Scholar Melanocytic nevi and melanoma: unraveling a complex relationship Oncogene 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