There a small bit of rectal tissue left behind to attach the j-pouch to. It's usually just a few centimeters. You can develope UC in the retained cuff and like UC that can cause bleeding. That's why the hallmark of cuffitis is bleeding. It may also include all the other symptoms of pouchitis. Oh, and to make things even better, you can have both cuffitis and pouchitis at the same time. They are medicinally treated differently - the cuffitis is treated with UC drugs/suppositories and pouchitis is treated with antibiotics.
Your doctor can usually detect if you have cuffitis with a simple digital examination. The rectal tissue has a different texture - it's rather bumpy.
kathy