Oral Mucosal Melanosis IntechOpen Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor 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 Melanotic Macule: Symptoms and Treatment Skinsight Congenital Melanotic Macule of the Tongue: Report of Two Cases and Literature Review Head and Neck Pathology Springer Nature Link Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360