Diagnosis of oral pigmentations and malignant transformations ScienceDirect Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Figure 1 from Oral melanotic macule a case report. Semantic Scholar An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360