Oral Pathology Oral malignant melanoma: a rarity! BMJ Case Reports COM April 2005 Diagnosis UW School of Dentistry NOW Citrus Flavor 3000 mg Triple Strength L Carnitine (16 fl oz) Delivery or Pickup Near Me Instacart Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule.