Case Report: melanoma and melanocytic nevus F1000Research Automated Segmentation of Microscopy Imaged Melanocytic Lesions and Classification Semantic Scholar 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 Melanocytic lesions displaying peripheral dots and globules may raise diagnostic uncertainty when identified beyond adolescence. This is a trunk lesion in a 46 year old patient with no personal history of melanoma. Would you An acral nevus is a benign melanocytic lesion found on the palms and soles. Dermoscopically, it most commonly shows the parallel furrow pattern, where pigmentation follows the furrows of the skin markings.