Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Diagnosis of oral pigmentations and malignant transformations ScienceDirect Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor 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 Pigmented (Purple or Brown) Lesions in the Mouth melanotic macule Archives Kazemi Oral Surgery Facialart.com