step 1: Have your uncle move to one of the 21 states where medical cannabis is legal if he lives in the USA.
step 2: Have him go for chemotherapy treatment in that state and not in a state without.
Just saying. It's good to counteract the negatives of traditional chemotherapy, plus he could jump on the high-density CBD oil testing for killing cancer cells, I think the animal studies show 30% complete remission with the oil alone and partial remission in the majority of animal testing? If I'm not mistaken they just started human testing so he might get a discount on it of some sort if he joined those tests.
I mean anything is worth a shot when it comes to getting over cancer, in my opinion.
Also your lymph nodes if you're curious splat:
http://en.wikipedia.org/wiki/Lymph_node
Of note, if he has cancer in a lymph node and elsewhere in the body, it may plausibly mean it started elsewhere and then spread - suggesting to me with my limited knowledge of cancers based on the internet that the bone based cancer may be the further progressed one as being more likely than vice versa.
Regardless, best wishes to you and your uncle.