That's great, Damo! A similar thing happened to a friend of mine; I've posted this before. She was given pretty much three weeks to live, was on oxygen in order to breathe, and they zapped the tumor with radiation in an attempt to increase the opening to let her breathe easier. The tumor started shrinking noticeably within 24 hours. She's now 6 years cancer free!
This is the friend who's a vegetarian. There are some data suggesting that vegetarians fare better in these circumstances, but I don't think any partitioning has been done in terms of differences in (more healthful?) lifestyles that might accompany such a diet.
Anyway, hope may be slim but it shouldn't be ignored.