A friend of mine, age 70, had prostate cancer 5 years ago. He was treated promptly and got rid of it. Ever since then his regular PSA exams have shown zero signs of prostate antigens. Yet he remains anxious because if the disease ever returns, according to his oncologist, it is certain to be terminal. Is this true? Once you ve had it, the next time you get it, you won t be able to beat it?