Of course I will pray for your son - I'm not really religious, but the power of prayer is mighty. And I am so very sorry that your son and you and your family are going through this, it is so very hard to see a loved one ill and suffering. Nature is cruel and life is unfair.
Hope and strength and fortitude - you have admirably, and your son is very brave. I add my hopes to yours. I'm sure we all think of Lance Armstrong as the proof that all can be well again. And you are doing all the right things.
So wise to see more than one doctor.

All the very best wishes, dear Corky,
and hugs,
from birte (BEMM)

ps My son and his wife have a little 5 year old adopted daughter whom I love to pieces. My son's wife can not have children, and believe me, grandchildren need not be 'home made' to be your heart's delight. Only your son's recovery matters.