Mark, I am also 4 years out of treatment and starting from a few months ago, I discover that from time to time, I cannot open my mouth wide enough to get the food in and both sides of the jaw become swollen for a few seconds. This does not happen all the time but you never know when your mouth is too lazy to open. Occasionally, when I am talking, similar thing happens and I have to stop for a while and cover my mouth with my hand while my friend is wondering why I suddenly stop talking. My oncologist cannot explain why this happens after 4 years post treatment and not earlier. The only explanation is that different side effects of the radiation emerge gradually and at different times. Like you, I sometimes wonder whether there are more adverse effects coming that may affect my hearing, my vision, my memory... but I know all this is out of my control. What I know is that I am already very lucky that I can survive this battle. In August, I lost a friend of another school who was defeated 2 months after being diagnosed with nasopharyngeal cancer.He still presented himself at a professional seminar in early June not knowing that cancer was already working in his body.I couldn't believe my ears when learning his death in mid August.
Karen