Oral Melanotic Macule: Symptoms and Treatment Skinsight COM Jan. 2008 Diagnosis UW School of Dentistry Clinical features of oral pigmented lesions: ( ) Nevus, ( ) melanotic Download Scientific Diagram 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 Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360