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Copyright ©The Author(s) 2017.
World J Gastrointest Endosc. Jun 16, 2017; 9(6): 255-262
Published online Jun 16, 2017. doi: 10.4253/wjge.v9.i6.255
Table 2 Risk factors for the development of colorectal cancer in patients with inflammatory bowel disease and recommended surveillance[1-7,9,11,13-15,17,18,24]
High riskIntermediate riskLow risk
Risk factorsPSC Extensive involvement Moderate-severe active inflammation sustained over time (endoscopic or histological) First-degree relative with CRC at an age of less than 50 Stenosis or dysplasia detected during the previous five years Appearance of IBD at a young age1 If ileo-anal pouch: Dysplasia Previous CRC PSC Type C mucosa in the pouchExtensive colitis with mild or moderate sustained inflammatory activity (endoscopic or histological) Inflammatory polyps First-degree relative with CRC at an age of above 50Other factors different from high and intermediate risk
SurveillanceAnnualEvery three yearsEvery five years