Frequency of pouch surveillance is actually controversial in some places. As time goes on and there are several decades of pouch data out there, there generally is no strict rule about this. Mostly, if you had cancer or dysplasia prepouch you definitely need more frequent scopes and biopsies. Once you get into the 10-20 years since first diagnosis of UC, you are at a higher risk. FAP adds a different layer of risk.
For myself, I am 50 years from my UC diagnosis and 26 years since my pouch surgery. I was informed this year by my GI that I can now go 5 years between scopes after multiple years of negative biopsies. I had been doing every 3 years for the past decade or so.
https://academic.oup.com/ecco-...cle/10/6/747/2605159
Jan 