Figure 1 from Oral melanotic macule a case report. Semantic Scholar 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 Labial melanotic macule Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor