Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect What Caused These Multiple Hyperpigmented Macules of the Mouth? Pigmented Lesions of the Oral Mucosa Pocket Dentistry In the process of removing a Labial Melanotic Macule. A Labial Melanotic Macule is a well defined, oval, brown to black, flat patch on the central third of the lower lip, as seen