Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Mucosal melanocytic macules This patient has multiple labial melanotic macules. These are essentially freckles of the lips. These most commonly involve the lower lip. This patient had involvement of both the upper and lower lips. Figure 1 from Oral melanotic macule a case report. Semantic Scholar Oral pathology: Noting a pigmented macule that often presents a diagnostic dilemma Registered Dental Hygienists