My Ophelia developed IBS (and the pancreatitis) in the last few years of her life. Possibly also bowel cancer but we were at "this is a good run; no chemo for kitties (in my budget anyway)" by that point. They gave her one month to one year to live; she made it almost 3 years and had a pretty decent QOL until right at the end.

I'm glad Lord Brock has a dx and is feeling better.