Case Report: melanoma and melanocytic nevus F1000Research Automated Segmentation of Microscopy Imaged Melanocytic Lesions and Classification Semantic Scholar Cutaneous and Oral Melanocytic Nevi: Background, Pathophysiology, Etiology 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