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. Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor Oral Mucosal Melanosis IntechOpen Melanocytic nevi and melanomas of the oral mucosa: detailed description of a case series Anais Brasileiros de Dermatologia (Portuguese) Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360