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 Benign skin lesions Part 2. Melanocytic lesions Medicine Today 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 nevi Basicmedical Key