Has anyone had really severe radiation esophagitis? My mom is being fed through a g tube in her stomach because she can't swallow without a great deal of pain. She's been on all the pain meds, syrups and numbing agents. She gets the best results with a polymer based product called Mugard, however, she can only take a couple of sips of liquid without pain. Her oncologist wants her to begin hyperbaric chamber treatments at UCLA in order to speed tissue healing and blood vessel development in the radiation damaged areas. Does anyone have any input on this? Thanks!