The one thing we were not told about the effects of radiation therapy was that there was to be copious amounts of phelgm. My husband coughed up/spit up phelgm throughout his treatment and afterwards for several weeks. This was probably one of the most frightening parts since we did not know the extent of the problem until it came about. The phelgm was very difficult to get out--would hang in long streams from his mouth and we'd have to pull w/ tissue to remove it. Not trying to scare you but you to know to be prepared.