Table 1

Post-polypectomy risk-stratification for surveillance according to primary screening colonoscopy findings in the Danish colorectal cancer screening programme19

ClassificationFindingsSurveillance
Clean colonNo polypsNo surveillance, return to FIT after 8 years
Low-risk polypsNo more than two adenomas both <10 mm in sizeNo surveillance, return to biennial screening
Intermediate-risk polypsThree to four adenomas <10 mm in size or one adenoma 10 to 19 mm in size or villous histology >25% or high-grade dysplasiaSurveillance colonoscopy after 3 and 8 years.
High-risk polypsGreater than four adenomas or one adenoma ≥20 mm in size or piecemeal resection of any adenomaSurveillance colonoscopy in 1, 4 and 9 years.
CancerCancer suspectBiopsy-guided immediate treatment decision (surgery, oncology, palliative)
  • FIT, faecal immunochemical test.