Melanocytic Lesions and Disorders of Pigmentation Obgyn Key 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 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 Benign skin lesions Part 2. Melanocytic lesions Medicine Today Benign melanocytic naevi Ocular melanomas and melanocytic lesions of the eye ScienceDirect