The irony is nothing short of amazing.
For your information, I have 3 immediate family members that have suffered from various types of Stage IV cancers. One of them had a sarcoma in his left arm, and he was told that he needed to have it amputated. When he decided to check out naturopathics (he stopped visiting his surgeon, avoided appointments) they x-rayed him again, and they decided to call off the operation because his cancer had regressed. Presently, all three have been cancer free for several years now

(knock on wood)
I am not saying that that this always happens, nor am I suggesting that naturopathics is superior to classic medical cancer treatment. However, in my opinion, it is the type of thing that really has no sort of harm on the body whatsoever if you follow it. You have nothing to lose, except for paying the naturopath every time you visit. My suggestion to you and your son: Do some research on it, call a local naturopath, and see if he could offer any sort of help whatsoever.