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. Oral Malignant Melanoma Oral Cancer Foundation Information and Resources about Oral Head and Neck Cancer Figure 1 from Oral melanotic macule a case report. Semantic Scholar Labial melanotic macule Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360