Oral malignant melanoma: a rarity! BMJ Case Reports Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com Mole on the inside of the cheek : r Dentistry PIGMENTED NODULAR MALIGNANT MELANOMA (PNMM): A neural crest derived tumor that is considered the deadliest of the oral cavity. To clinically test if a pigmented oral lesion is melanoma, simply wipe the Black spot inside cheek: Pictures, causes, treatment, and more