LaugierHunziker syndrome: a report of three cases and literature review International Journal of Oral Science Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 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 Melanotic Macules, Naevi, and Melanoma Springer Nature Link Simultaneous occurrence of melanocytic nevus and melanotic macule in the vermilion of the lower lip ScienceDirect