Minor performance measure	Adequate description of polyp morphology
Description	The Paris classification should be routinely used to describe the morphology of non-pedunculated lesions identified at colonoscopy.
Domain	Management of pathology
Category	Process
Rationale	The Paris classification is a helpful tool to assess the risk of invasion.
	When polyp description is adequate, removal of polyps harboring suspicious features is likely to be avoided.
Construct	Denominator: Colonoscopies with removal of non-pedunculated lesions
	Numerator: Procedures in the denominator where the Paris classification was used to describe lesions
	Exclusions: None
	Calculation: Proportion (%)
	Level of analysis: Service and endoscopist
	Frequency: Continuous monitoring using novel endoscopy reporting systems should be the preferred approach;12 an alternative approach is a 3-yearly audit of all colonoscopies performed over a 3-month period.
Standards	Minimum standard: Unknown
	Target standard: 100%
	Written colonoscopy reports should include a lesion description based on the Paris classification.
	If the target standard is not met, feedback on adequate description of polyp morphology is warranted.
	After evaluation and adjustment, close monitoring should be performed with a further audit within 6 months.
Consensus agreement	84.6%
PICO	3.9 (see Supporting Information)
Evidence grading	Very low quality evidence