1 Clinical Trials for Various Conditions
In this study the investigators hypothesize that High Definition White Light colonoscopy and narrow band imaging (NBI) will detect a higher number of adenomas compared to standard definition white light colonoscopy. NBI will have a higher accuracy in predicting polyp histology compared to high definition colonoscopy and standard colonoscopy. Specific Aim 1 - To compare the prevalence of adenomas detected by standard colonoscopy, high-definition white light colonoscopy and NBI. Specific Aim 2 - To compare the number of adenoma detected per subject by standard colonoscopy, high-definition white light colonoscopy and NBI. Specific Aim 3 - To compare the accuracy of predicting polyp histology between standard colonoscopy, high-definition white light colonoscopy and NBI by evaluating the surface mucosal and vascular patterns during the procedure. Specific Aim 4 - To determine the inter-observer agreement between investigators for the recognition of various polyp patterns