Table 2Surveillance schedule after adenoma removal in the model

Risk statusSchedule
Low risk :one or two adenomas smaller than 10 mmNo surveillance is recommended. However surveillance at 5 years, then no surveillance if subsequent colonoscopy results are negative can be considered and will be explored in the analysis.
Intermediate risk: three or four adenomas smaller than 10 mm or one or two adenomas if one is 10 mm or largerSurveillance is offered every 3 years until there are two consecutive negative colonoscopies, then surveillance is stopped.
High risk: five or more adenomas smaller than 10 mm or three or more adenomas if one is 10 mm or largerA colonoscopy is offered at or within 1 year to detect missed lesions:
  • if high-risk adenomas are detected, the person remains high risk
  • if results are negative, or low- or intermediate-risk adenomas are detected, the surveillance programme for people at intermediate risk is followed.

From: Appendix 8, Cost-effectiveness analysis of colonoscopic surveillance: adenomas

Cover of Colonoscopic Surveillance for Prevention of Colorectal Cancer in People with Ulcerative Colitis, Crohn's Disease or Adenomas
Colonoscopic Surveillance for Prevention of Colorectal Cancer in People with Ulcerative Colitis, Crohn's Disease or Adenomas.
NICE Clinical Guidelines, No. 118.
Centre for Clinical Practice at NICE (UK).
Copyright © 2011, National Institute for Health and Clinical Excellence.

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