Recommended frequency of surveillance

Indications

Every 5 years

– Colitis affecting <50% of the colon surface area

– Extensive colitis with mild endoscopic or histologic active inflammation

Every 3 years

– Postinflammatory polyps

– Colorectal cancer in a first-degree relative aged >50 years

– Extensive colitis with moderate or severe endoscopic or histologic inflammation

Every year

– Stricture within the past 5 years

– Dysplasia within the past 5 years in a patient who declines surgery

– Primary sclerosing cholangitis (including post orthotopic liver transplant), from the time of diagnosis

– Colorectal cancer in a first-degree relative aged <50 years