Multifocal Pigmentation of the Oral Cavity The Journal of the American Dental Association Pigmented Lesions of the Oral Mucosa Springer Nature Link Oral Melanoma: A Rare but Aggressive Oral Cancer Oral melanoma is a rare and highly aggressive malignant tumor that develops from melanocytes within the oral mucosa. It most commonly affects the Oral Malignant Melanoma Oral Cancer Foundation Information and Resources about Oral Head and Neck Cancer