Chinese Man Develops Rare Form of Melanoma on His Gums

A surgery was performed to remove to remove the affected gums and part of the man's upper jaw and the doctors said that they have not found any signs of cancer six months after the surgery. Emory University's Dr Susan Muller, who had previously conducted a study on melanomas, said that it was an extremely rare case of the disease. "This is an unbelievably rare type of melanoma. At this point, we don't know, first, why there are melanocytes in the mouth, and second, what makes those cells go bad and become malignant", she said.