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 Subungual Melanocytic Lesions: Key Clinical and Pathologic Concepts and Biopsy Techniques Actas Dermo Sifiliogrficas Melanocytic Lesions Basicmedical Key Benign Pigmented Skin Lesions Pediatric Surgery NaT Cutaneous and Oral Melanocytic Nevi: Background, Pathophysiology, Etiology