Figure 1 from Oral melanotic macule a case report. Semantic Scholar Removal of a melanotic macule on the lip with Q switched laser before and after photos taken 3 months apart, after a single treatment #dermatologist #dermatology #laser #laserderm #ottawaskincare #toc #ottawalaserclinic #cosmetics # Labial melanotic macule 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 Melanotic macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight in single basal melanocytes; NO nests. More info like this in Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect