Thanks for your ideas and advice, I was getting mentally prepared for the dietary changes.
I have a growth too big to remove with a sigmoidoscopy so he took a chunk to biopsy. Said it's probably a polyp but we need to get rid of it, and ruel out the big 'C'.
Since polyps aren't ususally isolated I will have a catscan and a colonoscopy (under sedation...yea!). This will be Wednesday. THEN I see the surgeon for a consultation on Thursday. I guess they don't want to mess with this stuff!
Oh well, at least if I don't have diverticulitis I can still eat nuts - a staple food for me!