Hello Gino, I believe that this could be debated beyond my comments but here goes: stage one usually would not involve radiation. stage four would always involve radiation and most likely chemo. Stages in between are on a sliding scale. Remember that chemo drugs are toxic and have their own sets of longterm side effects. What i think your doctor is saying is that radiation alone is enough insurance relative to the risk he/she sees as typical for your case. It is not always science but a kind of art. If your doc has considerable experience and you are at a CCC then I'd say trust what they are saying. Perhaps a second opinion is in order so that you can be comfortable with your decision.