I agree with Parazapper. I would never agree to radiation, either.
ASAP, your friend should seek other opinions on this vital subject.
Vital that he boost his immune system with Vitamin D3 20,000IU Daily, Vitamin C to bowel tolerance, and Iodine supplements, 300mg daily as recommended by Dr. Brownstein. See this link for cancers: https://sites.google.com/site/iodinereferenes/cancers