Colonoscopy surveillance interval
Enter the polyps removed and see the surveillance interval the guideline sets, with the rule and its source.
No lesion at this exam — scored as a normal colonoscopy.
A colonoscopy that found no lesions is outside ESGE post-polypectomy surveillance; the patient returns to their population screening programme.
Notes
- This is the population-screening default, not an ESGE post-polypectomy interval: ESGE's recommendations apply to "all patients who had one or more polyps that were completely removed", so a no-lesion colonoscopy falls outside them.
- Routine screening cadence: quantitative faecal immunochemical test generally every 2 years, ages 50 to 74 (Council of the EU 2022 recommendation); the exact interval is set by each national programme.
How ESGE 2020 sets the colonoscopy surveillance interval
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline divides patients into two groups after complete removal of one or more polyps at a high-quality colonoscopy: those who return to routine screening and those who need surveillance. Surveillance applies only to larger, more numerous, or dysplastic lesions, and where it applies the baseline interval is 3 years. ESGE abandoned the older high-risk and low-risk labels, and it does not treat villous histology or polyp location as a reason to shorten the interval.
| Finding at the baseline colonoscopy | Surveillance interval |
|---|---|
| 1 to 4 adenomas under 10 mm with low-grade dysplasia (with or without villous features) | Usual screening (colonoscopy in 10 years where no organised screening program exists) |
| Any serrated polyp under 10 mm without dysplasia | Usual screening (colonoscopy in 10 years where no organised screening program exists) |
| At least 1 adenoma 10 mm or larger, or an adenoma with high-grade dysplasia | 3 years, colonoscopy |
| 5 or more adenomas | 3 years, colonoscopy |
| Any serrated polyp 10 mm or larger, or with dysplasia | 3 years, colonoscopy |
| 10 or more adenomas | No surveillance interval set; referral for genetic counselling |
| Piecemeal resection of a polyp 20 mm or larger | Early repeat colonoscopy at 3 to 6 months, then surveillance colonoscopy 12 months after that |
ESGE returns 1 to 4 small adenomas with low-grade dysplasia to routine screening, whether or not they are villous, while the United States keeps the same adenomas in colonoscopy surveillance at 7 to 10 years.
Source: ESGE 2020 (Hassan et al., Endoscopy 2020;52(8):687–700) ↗. This is the baseline colonoscopy table; enter specific findings in the calculator above for the rule and its exact wording.
After a surveillance colonoscopy
ESGE keys the next interval to the most recent exam. Polyps requiring surveillance give 3 years; one clean surveillance exam gives 5 years; two consecutive clean exams return the patient to screening. It stops surveillance at age 80.
The calculator gives a timeframe wherever the guideline or the screening programme sets one, and labels anything the guideline does not itself specify.
Age, stopping, and risk factors
Age. Stop post-polypectomy surveillance at age 80, or earlier if life expectancy is limited by comorbidities (weak recommendation).
Risk factors. ESGE suggests against shortened intervals for a family history of colorectal cancer; hereditary syndromes and inflammatory bowel disease are covered separately.
Colonoscopy surveillance intervals: quick answers
How soon should a colonoscopy be repeated after polypectomy under Europe (ESGE 2020)?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline sets a baseline surveillance interval of 3 years for larger, more numerous, or dysplastic lesions. Patients whose polyps do not meet a surveillance trigger return to routine screening rather than a shorter colonoscopy interval.
What surveillance interval does ESGE 2020 recommend for 1 to 2 small tubular adenomas with low-grade dysplasia?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline returns patients with 1 to 4 adenomas under 10 mm and low-grade dysplasia to usual screening, meaning colonoscopy in 10 years where no organised programme exists. Villous features do not change this. The United States keeps the same adenomas in surveillance at 7 to 10 years.
Does ESGE 2020 shorten the interval for a 12 mm adenoma or high-grade dysplasia?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline recommends colonoscopy in 3 years when at least one adenoma is 10 mm or larger, when an adenoma shows high-grade dysplasia, or when 5 or more adenomas are found. Villous histology alone does not trigger a shorter interval.
What is the ESGE 2020 surveillance interval for a sessile serrated lesion?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline recommends colonoscopy in 3 years for any serrated polyp that is 10 mm or larger or that contains dysplasia. A serrated polyp under 10 mm without dysplasia, including a sessile serrated lesion (SSL), returns to usual screening at colonoscopy in 10 years where no organised programme exists.
How does ESGE 2020 handle surveillance after piecemeal resection of a large polyp?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline recommends an early repeat colonoscopy at 3 to 6 months after piecemeal resection of a polyp 20 mm or larger, to check for residual tissue. A surveillance colonoscopy then follows 12 months after that repeat examination.
When does ESGE 2020 send a patient back to FIT screening instead of colonoscopy surveillance?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline returns patients without a surveillance trigger to routine screening rather than colonoscopy surveillance. In an organised programme, that means a fecal immunochemical test (FIT) every 2 years for ages 50 to 74. Where no programme exists, it means colonoscopy in 10 years.
What does ESGE 2020 advise when 10 or more adenomas are found?
The European Society of Gastrointestinal Endoscopy (ESGE) 2020 guideline sets no routine surveillance interval when 10 or more adenomas are found. Instead it recommends referral for genetic counselling, since that burden raises the possibility of a hereditary polyposis syndrome rather than ordinary post-polypectomy surveillance.
For the guideline sources and side-by-side interval tables across all the guidelines, see the colonoscopy surveillance guideline reference.
Reference tool for health professionals. Not medical advice, not a medical device, and does not make or replace a clinical decision. The calculation runs in your browser; the findings you enter are not transmitted or stored. The Aescia clinical team reviews this tool periodically against the source guidelines and updates it when they change, but guidelines are revised without notice; verify against the current version before acting. If you notice an error, tell us at contact@aesciahealth.com.
Last reviewed against the source guidelines on 14 July 2026.
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