Nat. Rev. Gastroenterol. Hepatol. doi:10.1038/nrgastro.2017.46 Figure 6 Small flat polyp in the colon identified with high-definition endoscopy Figure 6 | Small flat polyp in the colon identified with high-definition endoscopy. Polyp depicted with a | white-light, high-definition endoscopy and b | with virtual chromoendoscopy using i-scan2 (Pentax, Japan). Hoffman, A. et al. (2017) A guide to multimodal endoscopy imaging for gastrointestinal malignancy — an early indicator Nat. Rev. Gastroenterol. Hepatol. doi:10.1038/nrgastro.2017.46