Congenital Melanotic Macule of the Tongue: Report of Two Cases and Literature Review Head and Neck Pathology Springer Nature Link 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 A Guide to Clinical Differential Diagnosis of Oral Mucosal Lesions Continuing Education Course dentalcare.com Lichenoid lesion on the tongue in a patient with Laugier Hunziker Syndrome Journal of Oral Diagnosis The Prevalence of Oral Pigmented Lesions among Sample of Dental Students. Labial melanotic macule