| Small rectal hyperplastic polyps |
10 years |
Exception are patients with hyperplastic polyposis syndrome, who need more intensive follow up. |
| One or two small (<1 cm) tubular adenomas with only low-grade dysplasia |
5–10 years |
The precise timing within this interval should be based on other clinical factors (such as prior colonoscopy findings, family history, and the preferences of the patient and judgment of the physician). |
| 3 to 10 adenomas, or any adenoma ≥ 1 cm, or any adenoma with villous features, or high-grade dysplasia |
3 years |
Adenomas must have been completely removed. If the follow up colonoscopy is normal or shows only 1 or 2 small, tubular adenomas with low-grade dysplasia, then the interval for the subsequent examination should be 5 years. |
| More than 10 adenomas at one examination |
< 3 years |
The interval should be based on the clinician judgement and consider the possibility of an underlying familial syndrome. |
| Sessile adenomas that are removed piecemeal |
2 to 6 months |
Once complete removal has been established, subsequent surveillance needs to be individualized based on the endoscopist’s judgment. Completeness of removal should be based on both endoscopic and pathologic assessments. |
