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 Laser Lip Treatment for Lip Discoloration: Patient Transformation Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360