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Gastrointest Endosc. 1991 Mar-Apr;37(2):125-7.

Prospective blinded trial of the colonoscopic miss-rate of large colorectal polyps.

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  • 1Section of Gastroenterology and Hematology-Oncology, Tucson Veterans Administration Medical Center, Arizona.


We prospectively studied the colonoscopic miss-rate of large colorectal polyps in a blinded trial featuring tandem colonoscopy. Sixty-three lesions greater than or equal to 1 cm in size were discovered and none were missed. Confidence intervals of 95% are a miss-rate of 0 to 4.6%. We conclude that less than 5% of large colorectal polyps are missed during the index colonoscopic examination in a well-prepared colon.

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