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. Melanotic Macules, Naevi, and Melanoma Springer Nature Link Pigmented Lesions and Melanoma Plastic Surgery KeyPlastic Surgery Key Pigmented Lesions of the Oral Mucosa Pocket Dentistry Definition of melanocytic macules associated with Peutz Jeghers syndrome NCI Dictionary of Genetics Terms NCI Labial melanotic macule