Melanoma:Melanoma is a cancer that develops in melanocytes, the pigment cells present in the skin. It can be more serious than the other forms of skin cancer because it may spread to other parts of the body (metastasize) and cause serious illness and death. About 50,000 new cases of melanoma are diagnosed in the United States every year.
Former President Jimmy Carter is fighting cancer with grace. He revealed there is melanoma on his brain and went through radiation Thursday. His treatment includes pembrolizumab, a drug approved just last year. Dr. David Agus, who leads the Westside Cancer Center at the University of Southern California, joins “CBS This Morning” to discuss Carter’s prognosis.