Pigmented Lesions of the Oral Mucosa Pocket Dentistry 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 Melanosis Mucosal Melanotic Macule Springer Nature Link Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com