A brown macule on the vermilion border of the lower lip. Download Scientific Diagram LaugierHunziker syndrome: a report of three cases and literature review International Journal of Oral Science Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor 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 Pigmented lesions of the oral mucosa and perioral tissues: a flow chart for the diagnosis and some recommendations for the management Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics Mucosal melanocytic macules