The mask is responsible for keeping your head exactly in position during the treatments. He assumes that there might be additional physical changes to the contours of your face/neck between now and then as a function of the healing process. This really doesn't change anything for you, and insures that you have something that fits well when the time comes.

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.