1. McIver MA. Instrument for visualizing interior of the common duct at operation. Surgery. 1941; 9:112–114.
2. Vennes JA, Silvis SE. Endoscopic visualization of bile and pancreatic ducts. Gastrointest Endosc. 1972; 18:149–152.
Article
3. Sethi A, Shah RJ. Cholangioscopy and pancreatoscopy. Tech Gastrointest Endosc. 2017; 19:182–187.
Article
4. 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
5. Ustundag Y, Bayraktar Y. Cholangiocarcinoma: a compact review of the literature. World J Gastroenterol. 2008; 14:6458–6466.
Article
6. Navaneethan U, Njei B, Lourdusamy V, Konjeti R, Vargo JJ, Parsi MA. Comparative effectiveness of biliary brush cytology and intraductal biopsy for detection of malignant biliary strictures: a systematic review and meta-analysis. Gastrointest Endosc. 2015; 81:168–176.
Article
7. Khashab MA, Fockens P, Al-Haddad MA. Utility of EUS in patients with indeterminate biliary strictures and suspected extrahepatic cholangiocarcinoma (with videos). Gastrointest Endosc. 2012; 76:1024–1033.
Article
8. Puli SR, Bechtold ML, Buxbaum JL, Eloubeidi MA. How good is endoscopic ultrasound-guided fine-needle aspiration in diagnosing the correct etiology for a solid pancreatic mass?: a meta-analysis and systematic review. Pancreas. 2013; 42:20–26.
9. Sadeghi A, Mohamadnejad M, Islami F, et al. Diagnostic yield of EUS-guided FNA for malignant biliary stricture: a systematic review and meta-analysis. Gastrointest Endosc. 2016; 83:290–298. e1.
Article
10. Heimbach JK, Sanchez W, Rosen CB, Gores GJ. Trans-peritoneal fine needle aspiration biopsy of hilar cholangiocarcinoma is associated with disease dissemination. HPB (Oxford). 2011; 13:356–360.
Article
11. Seo DW, Lee SK, Yoo KS, et al. Cholangioscopic findings in bile duct tumors. Gastrointest Endosc. 2000; 52:630–634.
Article
12. Fukuda Y, Tsuyuguchi T, Sakai Y, Tsuchiya S, Saisyo H. Diagnostic utility of peroral cholangioscopy for various bile-duct lesions. Gastrointest Endosc. 2005; 62:374–382.
Article
13. Kim HJ, Kim MH, Lee SK, Yoo KS, Seo DW, Min YI. Tumor vessel: a valuable cholangioscopic clue of malignant biliary stricture. Gastrointest Endosc. 2000; 52:635–638.
Article
14. 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.
15. Meves V, Ell C, Pohl J. Efficacy and safety of direct transnasal cholangioscopy with standard ultraslim endoscopes: results of a large cohort study. Gastrointest Endosc. 2014; 79:88–94.
Article
16. Farnik H, Weigt J, Malfertheiner P, et al. A multicenter study on the role of direct retrograde cholangioscopy in patients with inconclusive endoscopic retrograde cholangiography. Endoscopy. 2014; 46:16–21.
Article
17. 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
18. Chen YK, Pleskow DK. SpyGlass single-operator peroral cholangiopancreatoscopy system for the diagnosis and therapy of bile-duct disorders: a clinical feasibility study (with video). Gastrointest Endosc. 2007; 65:832–841.
Article
19. Chen YK, Parsi MA, Binmoeller KF, et al. Single-operator cholangioscopy in patients requiring evaluation of bile duct disease or therapy of biliary stones (with videos). Gastrointest Endosc. 2011; 74:805–814.
Article
20. Laleman W, Verraes K, Van Steenbergen W, et al. Usefulness of the single-operator cholangioscopy system SpyGlass in biliary disease: a single-center prospective cohort study and aggregated review. Surg Endosc. 2017; 31:2223–2232.
Article
21. Ogura T, Imanishi M, Kurisu Y, et al. Prospective evaluation of digital single-operator cholangioscope for diagnostic and therapeutic procedures (with videos). Dig Endosc. 2017; 29:782–789.
Article
22. Imanishi M, Ogura T, Kurisu Y, et al. A feasibility study of digital single-operator cholangioscopy for diagnostic and therapeutic procedure (with videos). Medicine (Baltimore). 2017; 96:e6619.
Article
23. Shah RJ, Raijman I, Brauer B, Gumustop B, Pleskow DK. Performance of a fully disposable, digital, single-operator cholangiopancreatoscope. Endoscopy. 2017; 49:651–658.
Article
24. Pereira P, Vilas-Boas F, Peixoto A, Andrade P, Lopes J, Macedo G. How SpyGlass™ may impact endoscopic retrograde cholangiopancreatography practice and patient management. GE Port J Gastroenterol. 2018; 25:132–137.
Article
25. Lenze F, Bokemeyer A, Gross D, Nowacki T, Bettenworth D, Ullerich H. Safety, diagnostic accuracy and therapeutic efficacy of digital single-operator cholangioscopy. United European Gastroenterol J. 2018; 6:902–909.
Article
26. Turowski F, Hügle U, Dormann A, et al. Diagnostic and therapeutic single-operator cholangiopancreatoscopy with SpyGlassDS™: results of a multicenter retrospective cohort study. Surg Endosc. 2018; 32:3981–3988.
Article
27. Ramchandani M, Reddy DN, Gupta R, et al. Role of single-operator peroral cholangioscopy in the diagnosis of indeterminate biliary lesions: a single-center, prospective study. Gastrointest Endosc. 2011; 74:511–519.
Article
28. Hartman DJ, Slivka A, Giusto DA, Krasinskas AM. Tissue yield and diagnostic efficacy of fluoroscopic and cholangioscopic techniques to assess indeterminate biliary strictures. Clin Gastroenterol Hepatol. 2012; 10:1042–1046.
Article
29. Draganov PV, Chauhan S, Wagh MS, et al. Diagnostic accuracy of conventional and cholangioscopy-guided sampling of indeterminate biliary lesions at the time of ERCP: a prospective, long-term follow-up study. Gastrointest Endosc. 2012; 75:347–353.
Article
30. Manta R, Frazzoni M, Conigliaro R, et al. SpyGlass single-operator peroral cholangioscopy in the evaluation of indeterminate biliary lesions: a single-center, prospective, cohort study. Surg Endosc. 2013; 27:1569–1572.
Article
31. Woo YS, Lee JK, Oh SH, et al. Role of SpyGlass peroral cholangioscopy in the evaluation of indeterminate biliary lesions. Dig Dis Sci. 2014; 59:2565–2570.
Article
32. Tieu AH, Kumbhari V, Jakhete N, et al. Diagnostic and therapeutic utility of SpyGlass® peroral cholangioscopy in intraductal biliary disease: single-center, retrospective, cohort study. Dig Endosc. 2015; 27:479–485.
33. Kurihara T, Yasuda I, Isayama H, et al. Diagnostic and therapeutic single-operator cholangiopancreatoscopy in biliopancreatic diseases: prospective multicenter study in Japan. World J Gastroenterol. 2016; 22:1891–1901.
Article
34. Navaneethan U, Hasan MK, Kommaraju K, et al. Digital, single-operator cholangiopancreatoscopy in the diagnosis and management of pancreatobiliary disorders: a multicenter clinical experience (with video). Gastrointest Endosc. 2016; 84:649–655.
Article
35. Varadarajulu S, Bang JY, Hasan MK, Navaneethan U, Hawes R, Hebert-Magee S. Improving the diagnostic yield of single-operator cholangioscopy-guided biopsy of indeterminate biliary strictures: ROSE to the rescue? (with video). Gastrointest Endosc. 2016; 84:681–687.
36. Burnett AS, Calvert TJ, Chokshi RJ. Sensitivity of endoscopic retrograde cholangiopancreatography standard cytology: 10-y review of the literature. J Surg Res. 2013; 184:304–311.
37. Mohamadnejad M, DeWitt JM, Sherman S, et al. Role of EUS for preoperative evaluation of cholangiocarcinoma: a large single-center experience. Gastrointest Endosc. 2011; 73:71–78.
Article
38. Navaneethan U, Hasan MK, Lourdusamy V, Njei B, Varadarajulu S, Hawes RH. Single-operator cholangioscopy and targeted biopsies in the diagnosis of indeterminate biliary strictures: a systematic review. Gastrointest Endosc. 2015; 82:608–614. e2.
Article
39. Mizrahi M, Khoury T, Wang Y, et al. “Apple Far from the Tree”: comparative effectiveness of fiberoptic single-operator cholangiopancreatoscopy (FSOCP) and digital SOCP (DSOCP). HPB (Oxford). 2018; 20:285–288.
Article
40. Tischendorf JJ, Krüger M, Trautwein C, et al. Cholangioscopic characterization of dominant bile duct stenoses in patients with primary sclerosing cholangitis. Endoscopy. 2006; 38:665–669.
Article
41. Moon JH, Ko BM, Choi HJ, et al. Direct peroral cholangioscopy using an ultra-slim upper endoscope for the treatment of retained bile duct stones. Am J Gastroenterol. 2009; 104:2729–2733.
Article
42. Tanaka R, Itoi T, Honjo M, et al. New digital cholangiopancreatoscopy for diagnosis and therapy of pancreaticobiliary diseases (with videos). J Hepatobiliary Pancreat Sci. 2016; 23:220–226.
Article
43. Sethi A, Chen YK, Austin GL, et al. ERCP with cholangiopancreatoscopy may be associated with higher rates of complications than ERCP alone: a single-center experience. Gastrointest Endosc. 2011; 73:251–256.
Article
44. Korrapati P, Ciolino J, Wani S, et al. The efficacy of peroral cholangioscopy for difficult bile duct stones and indeterminate strictures: a systematic review and meta-analysis. Endosc Int Open. 2016; 4:E263–E275.
Article
45. Bernica J, Elhanafi S, Kalakota N, et al. Cholangioscopy is safe and feasible in elderly patients. Clin Gastroenterol Hepatol. 2018; 16:1293–1299. e2.
Article
46. Parsi MA, Stevens T, Vargo JJ. Diagnostic and therapeutic direct peroral cholangioscopy using an intraductal anchoring balloon. World J Gastroenterol. 2012; 18:3992–3996.
Article
47. Deprez PH, Garces Duran R, Moreels T, et al. The economic impact of using single-operator cholangioscopy for the treatment of difficult bile duct stones and diagnosis of indeterminate bile duct strictures. Endoscopy. 2018; 50:109–118.
Article