Lingual melanotic macule the first case report in an adult patient* Anais Brasileiros de Dermatologia Figure 2 from Oral melanotic macule a case report. Semantic Scholar 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 Springer Nature Link