Image-enhanced endoscopy for diagnosis of colorectal tumors in view of endoscopic treatment

Figure 1 Narrow band imaging without magnification. A: Ia polyp 3 mm in diameter. White-light (WI) endoscopy figure; B: Meshed capillary pattern and oval surface pattern were detected with narrow band imaging (NBI) without magnification. The polyp was diagnosed as a neoplastic polyp; C: IIa polyp 16 mm in diameter. WI endoscopy figure; D: Meshed capillary pattern was not detected with NBI without magnification, but a round surface pattern was detected. The polyp was diagnosed as a non-neoplastic polyp.