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 Clinical features of acquired melanocytic nevioral mucosal and Download Scientific Diagram Dilemma of Nail Pigmentation How do you actually grade dysplastic nevi? The answer lies in TWO things: 1 Architectural disorder 2 Cytologic atypia As dysplasia progresses from mild moderate severe: Symmetry is Melanotic Spots and Melanocytic Nevi Springer Nature Link Pigmented Lesions and Melanoma Plastic Surgery KeyPlastic Surgery Key