Sorry to hear your treatment has hit a "bump in the road" Bob, but looking at the surgeon's background it looks like you are in superb hands and can be as confident as anyone can be about situations like this. You know yourself, the main thing is to keep your chins up and take each day as it comes. Speaking from my own experiences that's the only way I can do it, I don't think too far ahead, concentrate on the here and now and just get on with things.
Anyway, it goes without saying (why do people say that and then carry on talking anyway?
) but we'll all be thinking about you and praying for the best possible outcome for you.
All the best,