 Different endoscopic image enhanced modules like the narrow band imaging NBI have been developed to improve colonic polyp detection. However, it remains controversial whether the previous version of NBI helps to improve colonic polyp detection. The new generation colonoscope is equipped with high definition and improved narrow band imaging NBI which gives at least twice the viewable distance and contrast. The images obtained are far brighter with better resolution than the previous version. It however remains to be determined whether this enhanced imaging technique could help to improve colonic polyps detection. 