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 Mucosal melanocytic macules Summit Enlighten Laser to treat labial melanotic macules on the lip before and after. Facebook Oral Pigment lesions My Doctors 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