Mucocutaneous Pigmented Lesions, Nevi and Melanoma (Chapter 4) Pediatric Head and Neck Pathology Melanocytic Nevus The Operative Review Of Surgery Oral Congenital Melanocytic Nevi: A Rare Finding Consultant360 Melanocytic nevi Clinical Tree 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