Blue Light Imaging (BLI) for Optical Diagnosis of Colorectal Polyps

"All rectosigmoid \<5 mm polyps, regardless of the presence of larger polyps, will be characterized by BLI-assisted optical diagnosis by using BASIC criteria (neoplastic vs. non neoplastic) and will be included in polyp-level assessment.~The polyp characterization will be always performed and recorded without zoom magnification. In patients in which colonoscopy will be performed with endoscopes equipped with zoom magnification, the zoom will be eventually systematically applied and the characterization with zoom will be also recorded. The post-polypectomy surveillance intervals based on BLI will be calculated by using histology estimation performed without zoom for all patients. Only polyps characterized with high confidence will be included in the analysis; the high-confidence characterization rate will be calculated."