I agree with Jan. There is a lot of variability, both between patients and institutions on cancer surveillance. Someone who had dysplasia at colectomy and still has a cuff will likely need frequent scopes/biopsies. I developed a severe UC flare in my rectal stump between stage 1 and 2 so my CRS dissected out all rectal mucosa and stapled my pouch as low as possible to the anal sphincter. Across several scopes they have confirmed no mucosa left. I didn’t have dysplasia before and have no colonic tissue so I could likely get by without scheduled surveillance. I have other wonderful indications for scoping so get plenty of pouch inspections but not for cancer. Everyone’s situation is different with different recommendations at different institutions (which are not necessarily supported by a ton of good studies). I just do what I’m told at this point unless it seems overly or underly aggressive.