Welcome to OCF! Im very sorry to see what your patient has been thru. It certainly is quite alot!
We have one member here who has undergone 3 rounds of radiation. I know of another person who has done rads, brachytherapy and is currently doing another small round of radiation. There could be a difference is where they are being treated. A large cancer center may have a difference treatment plan available. Major cancer centers have a much higher track record for helping cancer patients, especially those in unusual circumstances. They will employ only the best in the field, the doctors who are the most experienced and up to date. Its worth a shot to at least make a few phone calls. I always say, "you dont get if you dont ask". If you are already being seen at a large cancer center, go for a second or third opinion at another one.
Good luck!!!!
Treatment Facility article Cancer Centers list PS... Please follow the info I sent you to make a signature when you can. Thanks!