Table 2.

Commonly used guidelines for the screening of neoplasia in inflammatory bowel disease

Society	Commencement	Risk stratification	Interval
ECCO, 2017	8 yr post symptom onset	Stricture or dysplasia, PSC, extensive colitis, severe active inflammation	Annual
		Mild to moderate active inflammation, post inflammatory polyps, or first degree relative with CRC	2-3 yr
		None of the above features	5 yr
AGA, 2010	8 yr post diagnosis	Active inflammation, stricture, post inflammatory polyps, history of dysplasia, first degree relative with CRC, PSC	Annual
		After 2 negative colonoscopies	1-3 yr
ACG, 2010	8-10 yr post diagnosis	No risk stratification	1-2 yr
BSG, 2010	10 yr post symptom onset	Moderate/severe active inflammation on the prior colonoscopy, stricture, dysplasia, PSC, first degree relative with CRC aged < 50 yr	Annual
		Mild active inflammation on prior colonoscopy, post inflammatory polyps, first degree relative with CRC aged > 50 yr	3 yr
		Nil prior inflammation, left sided colitis or CD colitis affecting > 50% surface area of the colon	5 yr

ECCO: European Crohn’s and Colitis Organisation; AGA: American Gastroenterological Association; ACG: American College of Gastroenterology; BSG: British Society of Gastroenterology.