Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect Frontiers Mucosal Melanoma: Pathological Evolution, Pathway Dependency and Targeted Therapy Differentiating between early melanomas and melanocytic nevi: A state of the art review ScienceDirect 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 Pathology Outlines Melanotic macule A Case Report of Oral Malignant Melanoma: A Silent Killer Cureus