Table 3.

Terms and Definitions^a

Term	Definition
Average risk for CRC	Absence of inflammatory bowel disease, family history of CRC, hereditary syndrome associated with increased risk, serrated polyposis syndrome, personal history of CRC
Normal colonoscopy	A colonoscopy where no adenoma, SSP, TSA, HP ≥10 mm, or CRC is found
Low-risk adenoma	1–2 nonadvanced adenomas <10 mm in size
Advanced adenoma	1 or more of the following findings:  • Adenoma ≥10 mm in size  • Adenoma with tubulovillous/villous histology  • Adenoma with high-grade dysplasia
Advanced neoplasia	1 or more of the following findings:  • Adenoma ≥10 mm in size  • Adenoma with tubulovillous/villous histology  • Adenoma with high-grade dysplasia  • CRC
High-risk adenoma	1 or more of the following findings:  • Advanced neoplasia  • 3 or more adenomas
Adequate ADR	ADR ≥30% in men and ≥20% in women
Adequate bowel preparation	Bowel preparation adequate for visualization of polyps >5 mm in size
Complete examination	Complete colonoscopy to cecum, with photo documentation of cecal landmarks, such as the appendiceal orifice, terminal ileum, or ileocecal valve
High-quality examination	Examination complete to cecum with adequate bowel preparation performed by colonoscopist with adequate adenoma detection rate and attention to complete polyp excision

^aWe propose moving forward that rather than using categories such as “high-risk adenoma” or “low-risk adenoma,” that research articles specify the individual criteria being captured by the category (eg, use 1–2 adenomas <10 mm instead of the term low-risk adenoma) because evidence supporting level of risk for various criteria are constantly evolving.