Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule. Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Figure 1 from Oral melanotic macule a case report. Semantic Scholar Pathology Outlines Melanotic macule Clinical features of oral pigmented lesions: ( ) Nevus, ( ) melanotic Download Scientific Diagram