Oral Melanotic Macule: Symptoms and Treatment Skinsight Lip pigmentation Mucosal melanocytic macules 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 Dermoscopy of venous lake on the lips: A comparative study with labial melanotic macule PLOS One LABIAL LENTIGO, Labial Lentigo also called a labial melanotic macule, is a harmless, small, flat, brown spot on the lip. It can develop after repeated sun exposure. In most cases, labial lentigo