Table 2.

Modified colonoscopy surveillance interval according to risk stratification in patients with IBD24,25

Risk level	High risk	Moderate risk	Low risk
Surveillance interval	Every year	Every 2–3 years	Every 5 years
Risk factors	● Extensive colitis with moderate to severe endoscopic and/or histological inflammation	● Extensive colitis with mild endoscopic and/or histological inflammation	● Colitis affecting less than 50% of the colon
	● CRC in a first-degree relative diagnosed before 50 years of age	● CRC in a first-degree relative diagnosed after 50 years of age
	● Concurrent PSC	● Post-inflammatory polyps
	● Stricture within 5 years
	● Dysplasia within 5 years

IBD, inflammatory bowel disease; CRC, colorectal cancer; PSC, primary sclerosing cholangitis.