Colon adenoma features and their impact on risk of future advanced adenomas and colorectal cancer

Table 5 Current guideline recommendations for surveillance based on from United States Multi-society Task Force on colorectal cancer, British Society of Gastroenterology, and European Society of Gastrointestinal Endoscopy[5,27,28]

Organization and yearof guidelines	Recommendations for surveillance of adenomas
	Baseline finding	Timing of next exam, yr
USMSTF on CRC[5], 2012	1-2 small adenomas	5-10
	Adenoma with villous histology	3
	Adenoma with high grade dysplasia	3
	Adenoma ≥ 10 mm	3
	3-10 adenomas	3
	Serrated polyps:
	< 10 mm no dysplasia	5
	≥ 10 mm	3
	Dysplasia	3
	Traditional serrated adenoma	3
British Society of Gastroenterology[28], 2010	1-2 small adenomas	5-10
	3-4 small adenomas	3
	Adenoma ≥ 10 mm	3
	≥ 5 small adenomas	1
	≥ 3 at least one ≥ 10 mm	1
European Society of Gastrointestinal Endoscopy[27], 2010	High risk adenomas:	3
	Adenoma ≥ 10 mm
	Adenomas with high grade dysplasia
	Villous component
	≥ 3 adenomas
	Serrated polyp ≥ 10 mm
	Serrated polyps with dysplasia
	Not high risk adenomas	10

CRC: Colorectal cancer; USMSTF: United States Multi-society Task Force.