I know for myself (finishing my last of 33 rad on Monday), I've felt like I have something caught in my throat for the last two or three weeks and nothing, no water, tea, food, etc. can seem to push it down. My guess is it's a manifestation of general swelling - I've discussed it with my rad oncologist and my speech therapist and both seem to think this is nothing to worry about.

That said, my situation and your husband's are likely radically different - if the problem persists and worries your husband, have him consult his oncologist. Mine is just an unpleasant aide effect, hopefully his is something similar.

Good luck and safe journey!

The Hellion