Accuracy of endoscopists’ estimate of polyp size: A continuous dilemma

Table 1 Discrepancy in reporting polyp size between endoscopists and pathologists based on the method of excision

Method of excision	Number of polyps	Mean endoscopist’s estimate	Mean pathologist’s measurement	Mean difference	Overestimate	P value
Biopsy excision	52	0.54 (± 0.16) cm	0.38 (± 0.19) cm	0.16 cm	39%	< 0.001
Snare polypectomy	59	0.97 (± 0.34) cm	0.54 (± 0.24) cm	0.43 cm	77%	< 0.001
Total	111	0.76 (± 0.35) cm	0.46 (± 0.23) cm	0.3 cm	65%	< 0.001