Endoscopic follow-up in colorectal cancer: Comparisons and critical issues across different guidelines

Table 2 Different surveillance interval recommendations for conventional adenomas in Western guideline

Colonoscopy findings	ESGE	BSG/ACPGBI/PHE	USMSTF
1-2 tubular adenomas < 10 mm	Return to screening	Return to screening	7-10 years
3-4 tubular adenomas < 10 mm	Return to screening	Return to screening	3-5 years
5-10 tubular adenomas < 10 mm	3 years	3 years	3 years
≥ 10 adenomas	Genetic counseling	Refer to BSG hereditary CRC guidelines1	1 year and consider genetic counseling
Adenoma with villous histology < 10 mm	Return to screening	Return to screening	3 years
Adenomas ≥ 10 mm	3 years	3 years	3 years
Adenoma with high-grade dysplasia	3 years	3 years	3 years
Piecemeal resection of adenoma ≥ 20 mm	3-6 months	2-6 months	6 months

¹If > 60 years old and lifetime history > 10 adenomas removed or if ≥ 60 years old and lifetime total ≥ 20 adenomas or ≥ 10 and family history colorectal cancer.

ESGE: European Society of Gastrointestinal Endoscopy; BSG: British Society of Gastroenterology; ACPGBI: Association of Coloproctology of Great Britain and Ireland; PHE: Public Health England; USMSTF: United States Multi-Society Task Force.