A retrospective study on endoscopic missing diagnosis of colorectal polyp and its related factors.

Background/aims: To investigate missing diagnosis of the polyp by colonoscopy, and to reveal the endoscopic, pathological features of missed polyps and related factors inducing missing diagnosis.

Materials And Methods: We reviewed the data of the patients who received colonoscopy twice within 180 days. The missing rate of the colorectal polyps ware calculated and the endoscopic and pathological features of the missed polyps were summarized.