Optical diagnosis of colorectal polyps using novel blue light imaging classification among trainee endoscopists.

Background: Blue light imaging (BLI) has been shown to improve the characterization of colorectal polyps among the endoscopy experts. We aimed to determine if this technology could be taught to endoscopy trainees while maintaining high accuracy and interobserver agreement.

Methods: Twenty-one gastroenterology trainees (fellows) from two academic institutions participated in this prospective study.