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 Lentigo maligna Wikipedia How to recognise amelanotic melanoma Pulse Today Eye neoplasm Wikipedia Melanocytic Nevus: What Is It, Causes, Signs and Symptoms, and More Osmosis Pigmented Lesions of the Oral Mucosa: Clinical Presentation, Histology, and Recommendations for Management American Journal of Clinical Dermatology Springer Nature Link