1. Moon JH, Terheggen G, Choi HJ, Neuhaus H. Peroral cholangioscopy: diagnostic and therapeutic applications. Gastroenterology. 2013; 144:276–282.
Article
2. Kim WJ, Park SY, Park I, et al. Increased detection of colorectal polyps in screening colonoscopy using high definition i-Scan compared with standard white light. Clin Endosc. 2016; 49:69–75.
Article
3. Sun X, Zhou Z, Tian J, et al. Is single-operator peroral cholangioscopy a useful tool for the diagnosis of indeterminate biliary lesion? A systematic review and meta-analysis. Gastrointest Endosc. 2015; 82:79–87.
Article
4. Lee YN, Moon JH, Choi HJ, et al. Direct peroral cholangioscopy for diagnosis of bile duct lesions using an i-Scan ultraslim endoscope: a pilot study. Endoscopy. 2017; 49:675–681.
Article
5. Mounzer R, Austin GL, Wani S, Brauer BC, Fukami N, Shah RJ. Per-oral video cholangiopancreatoscopy with narrow-band imaging for the evaluation of indeterminate pancreaticobiliary disease. Gastrointest Endosc. 2017; 85:509–517.
6. Ishida Y, Itoi T, Okabe Y. Can image-enhanced cholangioscopy distinguish benign from malignant lesions in the biliary duct? Best Pract Res Clin Gastroenterol. 2015; 29:611–625.
Article
7. Itoi T, Sofuni A, Itokawa F, et al. Initial experience of peroral pancreatoscopy combined with narrow-band imaging in the diagnosis of intraductal papillary mucinous neoplasms of the pancreas (with videos). Gastrointest Endosc. 2007; 66:793–797.
Article
8. Itoi T, Sofuni A, Itokawa F, et al. Peroral cholangioscopic diagnosis of biliary-tract diseases by using narrow-band imaging (with videos). Gastrointest Endosc. 2007; 66:730–736.
Article
9. Parsi MA, Jang S, Sanaka M, Stevens T, Vargo JJ. Diagnostic and therapeutic cholangiopancreatoscopy: performance of a new digital cholangioscope. Gastrointest Endosc. 2014; 79:936–942.
Article
10. Ishida Y, Itoi T, Okabe Y. Types of peroral cholangioscopy: how to choose the most suitable type of cholangioscopy. Curr Treat Options Gastroenterol. 2016; 14:210–219.
Article
11. ASGE Technology Committee, Komanduri S, Thosani N, et al. Cholangiopancreatoscopy. Gastrointest Endosc. 2016; 84:209–221.
Article
12. Choi JH, Lee SK. Percutaneous transhepatic cholangioscopy: does its role still exist? Clin Endosc. 2013; 46:529–536.
Article
13. Hamada T, Tsujino T, Sasahira N, et al. Percutaneous transhepatic cholangioscopy with an ultraslim video upper endoscope with CO2 insufflation: a feasibility study. Gastrointest Endosc. 2011; 74:696–699.
Article
14. Maetani I, Ogawa S, Sato M, Igarashi Y, Sakai Y, Shibuya K. Lack of methylene blue staining in superficial epithelia as a possible marker for superficial lateral spread of bile duct cancer. Diagn Ther Endosc. 1996; 3:29–34.
Article
15. Hoffman A, Kiesslich R, Bittinger F, Galle PR, Neurath MF. Methylene blue-aided cholangioscopy in patients with biliary strictures: feasibility and outcome analysis. Endoscopy. 2008; 40:563–571.
Article
16. Itoi T, Shinohara Y, Takeda K, Nakamura K, Takei K. Improvement of choledochoscopy: chromoendocholedochoscopy, autofluorescence imaging, or narrow-band imaging. Dig Endosc. 2007; 19(Suppl 1):S95–S104.
Article
17. Osanai M, Itoi T, Igarashi Y, et al. Peroral video cholangioscopy to evaluate indeterminate bile duct lesions and preoperative mucosal cancerous extension: a prospective multicenter study. Endoscopy. 2013; 45:635–642.
Article
18. Nishikawa T, Tsuyuguchi T, Sakai Y, et al. Preoperative assessment of longitudinal extension of cholangiocarcinoma with peroral video-cholangioscopy: a prospective study. Dig Endosc. 2014; 26:450–457.
Article
19. Azeem N, Gostout CJ, Knipschield M, Baron TH. Cholangioscopy with narrow-band imaging in patients with primary sclerosing cholangitis undergoing ERCP. Gastrointest Endosc. 2014; 79:773–779. e2.
Article
20. Ishida Y, Okabe Y, Kaji R, et al. Evaluation of magnifying endoscopy using narrow band imaging using ex vivo bile duct (with video). Dig Endosc. 2013; 25:322–328.
21. Ishida Y, Okabe Y, Yasumoto M, et al. Ex vivo magnifying endoscopic observation of bile duct mucosa using narrowband imaging. J Hepatobiliary Pancreat Sci. 2018; 25:433–439.
Article
22. Brauer BC, Fukami N, Chen YK. Direct cholangioscopy with narrow-band imaging, chromoendoscopy, and argon plasma coagulation of intraductal papillary mucinous neoplasm of the bile duct (with videos). Gastrointest Endosc. 2008; 67:574–576.
Article
23. Itoi T, Sofuni A, Itokawa F, Tsuchiya T, Kurihara T. Evaluation of peroral videocholangioscopy using narrow-band imaging for diagnosis of intraductal papillary neoplasm of the bile duct. Dig Endosc. 2009; 21 Suppl 1:S103–S107.
Article
24. Itoi T, Neuhaus H, Chen YK. Diagnostic value of image-enhanced video cholangiopancreatoscopy. Gastrointest Endosc Clin N Am. 2009; 19:557–566.
Article
25. Itoi T, Kamisawa T, Igarashi Y, et al. The role of peroral video cholangioscopy in patients with IgG4-related sclerosing cholangitis. J Gastroenterol. 2013; 48:504–514.
Article