Oral Mucosal Melanosis IntechOpen Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect Oral melanoacanthoma: a case report and review of the literature Journal of Medical Case Reports Springer Nature Link Happy Wednesday! , In this video, a patients labial melanotic macule (a benign pigmented lesion) is being treated with liquid nitrogen. Labial melanotic macules are flat and asymmetrical with a Labial Macules: Dark Spots on the Lip Dermatology Advisor Oral Melanotic Macule: Symptoms and Treatment Skinsight