Risk factors of missed colorectal lesions after colonoscopy.
Failure to detect abnormalities during testing can lead to missed or delayed diagnoses. In this retrospective observational study, investigators found that nearly 20% of colonoscopies that needed to be repeated within 6 months had an undetected abnormal finding—a polyp—that was not initially detected. The authors caution that there is significant risk of missing abnormal findings on colonoscopy.