Clinical Validity Verification on Diagnostic Assistance for Presence and Severity of Colorectal Cancer and Polyps Using Artificial Intelligence-based Medical Device Software Endoscopic Imaging Assistance

Inclusion Criteria: * Participants aged 18 years or older at the time of colonoscopy. * Participants who underwent colonoscopy at Asan Medical Center and had colorectal lesion images available for retrospective analysis. * Participants with corresponding histopathological results available as the reference standard. * Colonoscopy images that met the predefined image quality requirements for analysis by ENAD-CADx-01. Exclusion Criteria: * Participants without corresponding histopathological results for the colorectal lesion. * Images with insufficient quality for analysis, including severe blur, obstruction, or inadequate visualization of the lesion. * Images or records with missing or insufficient data required for the clinical performance analysis. * Lesions that did not meet the predefined target lesion categories or other eligibility requirements specified in the clinical investigation plan.