White light endoscopy, narrow band imaging and chromoendoscopy with magnification in diagnosing colorectal neoplasia

Figure 1 Hyperplastic polyp. A: High resolution white light magnified image: the pit pattern cannot be clearly discerned; B: Narrow band imaging with magnification where the Mesh Brown Capillary pattern is not visualised (Type I MBCN); C: Chromoendoscopy with magnification depicting a Kudo’s Type II pit pattern.

Figure 2 Adenomatous polyp. A: High resolution white light magnified image: Kudo’s Type IV pit pattern can be visualised; B: Narrow band imaging with magnification demonstrating Kudo’s Type IV pit pattern and regular capillary network surrounding the pits (Type II MBCN); C: Chromoendoscopy with magnification depicting a Kudo’s Type IV pit pattern.

Figure 3 Carcinoma. A: High resolution white light magnified image where the Type IV/V Kudo’s pit pattern can be made out but with difficulty; B: Narrow band imaging with magnification demonstrating where the Kudo’s pit pattern is not visualised but irregular and tortuous Mesh Brown Capillary Network is clearly seen (Type III MBCN); C: Chromoendoscopy with magnification depicting a Kudo’s Type V pit pattern.