Mark's response is right on target, and his analogy of the grass is most appropriate. In very localized oral cancers IMRT is being used at some centers to spare the salivary glands and the thyroid from exposure. But those patients who meet the protocols for IMRT of oral cancers must not have cervical involvement.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.