I was recently advised by my pouch specialist that Dr. Bo Shen (USA pouch expert) advised him that pouchoscopies should be done annually because of the concern at Cleveland Clinic with the amount of rectal cuff cancer cases they are seeing. Because of said advice, I was elevated from a once biannually to a once annually cycle. With my former specialist, I was told once annually, and the only time since 1992 that I went two years without a scope was the last 2 years, 2010-2012. During those two years I experienced shocking deterioration in my pouch despite not feeling any symptoms.
Some here will tell you annual scopes are not needed if there is no inflammation/pouchitis demonstrated on scope but I heard this line of reasoning refuted by the Shenites, who believes that we all have microscopic inflammation in the rectal cuff. I actually have not had any problems there as with cuffitis but I was told that my history of dysplasia warrants a concern that those areas should still be biopsied every year.
If you have not been scoped since 2006 you really should be going for one under any reasonable analysis.