Malcom,
a card to Your friend is on the way from Germany…
Do You know the books from Simonton (I think is given name is George)? Maybe
You want to get You or him a copy. Simonton had good results with visualisation
techniques.
I have no knowledge at all about cancer, but I read sometimes this name
(Simonton). And I know that sometimes there is a "spontanous remission" which
leave the doctors without explanation.
I wish Your friend the best!
Best regards
Werner