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Takada Y, Ishikawa T, Yamao K, Mizutani Y, Iida T, Uetsuki K, Kawashima H. An atypical case of isolated immunoglobulin G4-related sclerosing cholangitis with a cholangiogram resembling primary sclerosing cholangitis. Clin J Gastroenterol 2024; 17:338-344. [PMID: 38170392 DOI: 10.1007/s12328-023-01903-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024]
Abstract
An asymptomatic 77-year-old man with intrahepatic bile duct dilation was referred to our hospital. Cholangiography revealed alternations between strictures and dilated segments from the right and left hepatic ducts to the lower bile ducts, with findings of a pruned tree, beaded, shaggy appearance, and diverticulum-like outpouching. Histopathology revealed abundant immunoglobulin G4 (IgG4)-positive plasma cells (> 10 per high-power field) with an IgG4/IgG-positive cell ratio of 40-50%. After 2 weeks of steroid therapy, the cholangiography markedly improved. Because the cholangiographic findings resembled those of primary sclerosing cholangitis, steroid therapy proved useful in differentiating IgG4-related sclerosing cholangitis from primary sclerosing cholangitis.
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Affiliation(s)
- Yoshihisa Takada
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan
| | - Takuya Ishikawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan.
| | - Kentaro Yamao
- Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan
| | - Yasuyuki Mizutani
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan
| | - Tadashi Iida
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan
| | - Kota Uetsuki
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65, Tsuruma-Cho, Showa-Ku, Nagoya, 466-8560, Japan
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Ishii T, Kaneko T, Murakami A, Enomoto M, Sugimori K, Kawana I, Maeda S. Cholangioscopy in IgG4-related sclerosing cholangitis using texture and color enhancement imaging and red dichromatic imaging. Endoscopy 2023; 55:E1019-E1020. [PMID: 37647934 PMCID: PMC10468263 DOI: 10.1055/a-2155-4853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Tomohiro Ishii
- Department of Gastroenterology, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Takashi Kaneko
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Ayumi Murakami
- Department of Pathology, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Masato Enomoto
- Department of Gastroenterology, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Kazuya Sugimori
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Ichiro Kawana
- Department of Gastroenterology, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan
| | - Shin Maeda
- Department of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Yadlapati S, Mulki R, Sánchez-Luna SA, Ahmed AM, Kyanam Kabir Baig KR, Peter S. Clinical approach to indeterminate biliary strictures: Clinical presentation, diagnosis, and workup. World J Gastroenterol 2023; 29:5198-5210. [PMID: 37901449 PMCID: PMC10600956 DOI: 10.3748/wjg.v29.i36.5198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/23/2023] [Accepted: 08/21/2023] [Indexed: 09/20/2023] Open
Abstract
Despite advances in cross-sectional imaging and endoscopic technology, bile duct strictures remain a challenging clinical entity. It is crucial to make an early determination of benign or malignant nature of biliary strictures. Early diagnosis not only helps with further management but also minimizes mortality and morbidity associated with delayed diagnosis. Conventional imaging and endoscopic techniques, particularly endoscopic retrograde cholangiopancreatography (ERCP) and tissue sampling techniques play a key in establishing a diagnosis. Indeterminate biliary strictures (IDBSs) have no definite mass on imaging or absolute histopathological diagnosis and often warrant utilization of multiple diagnostics to ascertain an etiology. In this review, we discuss possible etiologies, clinical presentation, diagnosis, and management of IDBSs. Based on available data and expert opinion, we depict an evidence based diagnostic algorithm for management of IDBSs. Areas of focus include use of traditional tissue sampling techniques such as ERCP with brush cytology, intraductal biopsies, fluorescence in situ hybridization and flow cytometry. We also describe the role of endoscopic ultrasound (EUS)-guided fine needle aspiration and biopsies, cholangioscopy, confocal laser endomicroscopy, and intraductal EUS in management of IDBSs.
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Affiliation(s)
- Sujani Yadlapati
- Department of Gastroenterology and Hepatology, Indiana University Hospital, Indianapolis, IN 46202, USA
| | - Ramzi Mulki
- Department of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Sergio A Sánchez-Luna
- Department of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ali M Ahmed
- Department of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | | | - Shajan Peter
- Department of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Chazouilleres O, Beuers U, Bergquist A, Karlsen TH, Levy C, Samyn M, Schramm C, Trauner M. EASL Clinical Practice Guidelines on sclerosing cholangitis. J Hepatol 2022; 77:761-806. [PMID: 35738507 DOI: 10.1016/j.jhep.2022.05.011] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 02/07/2023]
Abstract
Management of primary or secondary sclerosing cholangitis is challenging. These Clinical Practice Guidelines have been developed to provide practical guidance on debated topics including diagnostic methods, prognostic assessment, early detection of complications, optimal care pathways and therapeutic (pharmacological, endoscopic or surgical) options both in adults and children.
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Tsuyuguchi T. Pancreato-hepatobiliary endoscopy: Cholangioscopy. Dig Endosc 2022; 34 Suppl 2:107-110. [PMID: 34590352 DOI: 10.1111/den.14138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Toshio Tsuyuguchi
- Department of Gastroenterology, Chiba Prefectural Sawara Hospital, Chiba, Japan
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6
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Role of Endoscopic Retrograde Cholangiopancreatography in the Diagnosis and Management of Cholestatic Liver Diseases. Clin Liver Dis 2022; 26:51-67. [PMID: 34802663 DOI: 10.1016/j.cld.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cholestatic liver diseases (CLDs) occur as a result of bile duct injury, emanating into duct obstruction and bile stasis. Advances in radiological imaging in the last decade has replaced endoscopic retrograde cholangiopancreatography (ERCP) as the first diagnostic tool, except in certain groups of patients, such as those with ischemic cholangiopathy (IsC) or early stages of primary sclerosing cholangitis (PSC). ERCP provides an opportunity for targeted tissue acquisition for histopathological evaluation and carries a diverse therapeutic profile to restore bile flow. The aim of this review article is to appraise the diagnostic and therapeutic roles of ERCP in CLDs.
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Angsuwatcharakon P, Kulpatcharapong S, Moon JH, Ramchandani M, Lau J, Isayama H, Seo DW, Maydeo A, Wang HP, Nakai Y, Ratanachu-Ek T, Bapaye A, Hu B, Devereaux B, Ponnudurai R, Khor C, Kongkam P, Pausawasdi N, Ridtitid W, Piyachaturawat P, Khanh PC, Dy F, Rerknimitr R. Consensus guidelines on the role of cholangioscopy to diagnose indeterminate biliary stricture. HPB (Oxford) 2022; 24:17-29. [PMID: 34172378 DOI: 10.1016/j.hpb.2021.05.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/08/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Indeterminate strictures pose a therapeutic dilemma. In recent years, cholangioscopy has evolved and the availability of cholangioscopy has increased. However, the position of cholangioscopy in the diagnostic algorithm to diagnose malignancy have not been well established. We aim to develop a consensus statement regarding the clinical role of cholangioscopy in the diagnosis of indeterminate biliary strictures. METHODS The international experts reviewed the evidence and modified the statements using a three-step modified Delphi method. Each statement achieves consensus when it has at least 80% agreement. RESULTS Nine final statements were formulated. An indeterminate biliary stricture is defined as that of uncertain etiology under imaging or tissue diagnosis. When available, cholangioscopic assessment and guided biopsy during the first round of ERCP may reduce the need to perform multiple procedures. Cholangioscopy are helpful in diagnosing malignant biliary strictures by both direct visualization and targeted biopsy. The absence of disease progression for at least 6 months is supportive of non-malignant etiology. Direct per-oral cholangioscopy provides the largest accessory channel, better image definition, with image enhancement but is technically demanding. Image enhancement during cholangioscopy may increase the diagnostic sensitivity of visual impression of malignant biliary strictures. Cholangioscopic imaging characteristics including tumor vessels, papillary projection, nodular or polypoid mass, and infiltrative lesions are highly suggestive for neoplastic/malignant biliary disease. The risk of cholangioscopy related cholangitis is higher than in standard ERCP, necessitating prophylactic antibiotics and ensuring adequate biliary drainage. Per-oral cholangioscopy may not be the modality of choice in the evaluation of distal biliary strictures due to inherent technical difficulties. CONCLUSION Evidence supports that cholangioscopy has an adjunct role to abdominal imaging and ERCP tissue acquisition in order to evaluate and diagnose indeterminate biliary strictures.
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Affiliation(s)
- Phonthep Angsuwatcharakon
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand; Department of Anatomy, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Santi Kulpatcharapong
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Jong H Moon
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Seoul, South Korea
| | | | - James Lau
- Department of Surgery, Endoscopic Center, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Dong W Seo
- Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Amit Maydeo
- Baldota Institute of Digestive Sciences, Global Gleneagles Hospital, Mumbai, India
| | - Hsiu-P Wang
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yousuke Nakai
- Departments of Endoscopy and Endoscopic Surgery, The University of Tokyo, Tokyo, Japan
| | | | - Amol Bapaye
- Shivanand Desai Center for Digestive Disorders, Deenanath Mangeshkar Hospital & Research Center, India
| | - Bing Hu
- Department of Gastroenterology, Eastern Hepatobiliary Hospital, Naval Medical University, Shanghai, China
| | - Benedict Devereaux
- University of Queensland, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | | | - Christopher Khor
- Department of Gastroenterology and Hepatology, Singapore General Hospital and Duke-NUS Medical School, Singapore
| | - Pradermchai Kongkam
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Nonthalee Pausawasdi
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Wiriyaporn Ridtitid
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Panida Piyachaturawat
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Pham C Khanh
- Department of Endoscopy, University Medical Center, Ho Chi Minh City, Viet Nam
| | - Federick Dy
- Section of Gastroenterology, Department of Internal Medicine, Faculty of Medicine and Surgery, University of Santo Tomas Hospital, Manila, Philippines
| | - Rungsun Rerknimitr
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand; Center of Excellence for Innovation and Endoscopy in Gastrointestinal Oncology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
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Fukuhara S, Iwasaki E, Kayashima A, Machida Y, Tamagawa H, Kawasaki S, Horibe M, Hori S, Abe Y, Kitago M, Ogata H, Kanai T. Endoscopic Diagnosis of Biliary Stricture Combined with Digital Cholangioscope: A Case Series. Healthcare (Basel) 2021; 10:healthcare10010012. [PMID: 35052176 PMCID: PMC8775675 DOI: 10.3390/healthcare10010012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 11/18/2022] Open
Abstract
The endoscopic diagnosis of biliary tract lesions is applied as a non-invasive method; however, its diagnostic accuracy is not yet high. Moreover, digital cholangioscopy is used for directly visualizing the inside of the bile duct, resulting in a more precise biopsy. We present the case series of the outcomes of diagnosis using digital cholangioscopy in patients who underwent cholangioscopy for the evaluation of biliary stenosis in our department between January 2014 and March 2021. The controls were those who underwent a biopsy for biliary stenosis with conventional endoscopic retrograde cholangiopancreatography (ERCP). Background data for each case were collected, and the clinical outcomes by biopsy were evaluated, focusing on the accuracy of the diagnosis. Cholangioscopy was performed in 15 cases, while a conventional biopsy by ERCP was performed in 172 cases. Nine of 15 cases (60.0%) were diagnosed with cholangiocarcinoma. The number of specimens obtained through conventional ERCP and cholangioscopy was 2.5 ± 1.3 and 3.3 ± 1.5, respectively (p = 0.043). The diagnostic accuracy of conventional ERCP and cholangioscopy were 65.7% (113 of 172 cases) and 100%, respectively, which was significantly higher in the group with cholangioscopy. Digital cholangioscopy is useful when the diagnosis of the biliary stricture using the conventional ERCP method is difficult.
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Affiliation(s)
- Seiichiro Fukuhara
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.F.); (H.O.)
- National Hospital Organization Tokyo Medical Center, Division of Gastroenterology and Hepatology, Tokyo 152-8902, Japan;
| | - Eisuke Iwasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
- Correspondence: ; Tel.: +81-3-5363-3790
| | - Atsuto Kayashima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Yujiro Machida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Hiroki Tamagawa
- National Hospital Organization Tokyo Medical Center, Division of Gastroenterology and Hepatology, Tokyo 152-8902, Japan;
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Shintaro Kawasaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
| | - Shutaro Hori
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Yuta Abe
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Minoru Kitago
- Department of Surgery, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.H.); (Y.A.); (M.K.)
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo 160-8582, Japan; (S.F.); (H.O.)
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; (A.K.); (Y.M.); (S.K.); (M.H.); (T.K.)
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Lee T, Teng TZJ, Shelat VG. Choledochoscopy: An update. World J Gastrointest Endosc 2021; 13:571-592. [PMID: 35070020 PMCID: PMC8716986 DOI: 10.4253/wjge.v13.i12.571] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 07/23/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023] Open
Abstract
Choledochoscopy, or cholangioscopy, is an endoscopic procedure for direct visualization within the biliary tract for diagnostic or therapeutic purposes. Since its conception in 1879, many variations and improvements are made to ensure relevance in diagnosing and managing a range of intrahepatic and extrahepatic biliary pathologies. This ranges from improved visual impression and optical guided biopsies of indeterminate biliary strictures and clinically indistinguishable pathologies to therapeutic uses in stone fragmentation and other ablative therapies. Furthermore, with the evolving understanding of biliary disorders, there are significant innovative ideas and techniques to fill this void, such as nuanced instances of biliary stenting and retrieving migrated ductal stents. With this in mind, we present a review of the current advancements in choledo-choscopy with new supporting evidence that further delineates the role of choledochoscopy in various diagnostic and therapeutic interventions, complications, limitations and put forth areas for further study.
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Affiliation(s)
- Tsinrong Lee
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Thomas Zheng Jie Teng
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Vishal G Shelat
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
- Department of General Surgery, Tan Tock Seng Hospital, Singapore 308433, Singapore
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Han S, Kahaleh M, Sharaiha RZ, Tarnasky PR, Kedia P, Slivka A, Chennat JS, Joshi V, Sejpal DV, Sethi A, Shah RJ. Probe-based confocal laser endomicroscopy in the evaluation of dominant strictures in patients with primary sclerosing cholangitis: results of a U.S. multicenter prospective trial. Gastrointest Endosc 2021; 94:569-576.e1. [PMID: 33798541 DOI: 10.1016/j.gie.2021.03.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/21/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Patients with primary sclerosing cholangitis (PSC) and dominant biliary strictures carry increased risk for the development of cholangiocarcinoma. Although ERCP-based techniques including brush cytology and intraductal biopsy sampling represent first-line tissue sampling methods for dominant strictures, sensitivity is low. Probe-based confocal laser endomicroscopy (pCLE) offers microscopic-level imaging of subepithelial biliary mucosa. Because data regarding the use of pCLE in PSC are limited, we aimed to investigate its diagnostic performance in dominant strictures. METHODS This was a multicenter prospective study involving PSC patients with dominant strictures. ERCP with pCLE was performed with use of the Miami classification (2+ criteria for malignant diagnosis) and Paris classification. Final malignant diagnoses required histopathologic confirmation, and benign diagnoses required a minimum of 1 year of follow-up without development of cancer. RESULTS Fifty-nine patients (mean age, 49 years; 59% men) with 63 strictures were included in the study. Stricture locations included the common bile duct (31.7%), bifurcation (22.2%), and common hepatic duct (19%). Seven patients (11.9%) were found to have cholangiocarcinoma. The sensitivity and specificity of pCLE was 85.7% (95% confidence interval [CI], 42.1-99.6) and 73.1% (95% CI, 58.9-84.4), respectively. Within specific stricture locations, the highest sensitivity was seen at the bifurcation (100%; 95% CI, 2.5-100) and the right hepatic duct (100%; 95% CI, 29.2-100). The lowest sensitivities were seen at the common bile duct (25%; 95% CI, 5.5-57.2) and the left hepatic duct (28.6%; 95% CI, 3.7-70.9). CONCLUSIONS In this prospective multicenter study, pCLE had a high sensitivity in detecting cholangiocarcinoma, but technical aspects of the probe may limit evaluation in the common bile duct and left hepatic duct. Further evaluation is needed to elucidate the role of pCLE in the algorithm of excluding neoplasia in biliary strictures associated with PSC. (Clinical trial registration number: NCT02736708.).
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Affiliation(s)
- Samuel Han
- Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Michel Kahaleh
- Division of Gastroenterology, Rutgers Robert Wood Johnson University Hospital, New Brunswick, New Jersey, USA
| | - Reem Z Sharaiha
- Division of Gastroenterology, Weill Cornell Medical Center, New York, New York, USA
| | - Paul R Tarnasky
- Division of Gastroenterology, Dallas Methodist Medical Center, Dallas, Texas, USA
| | - Prashant Kedia
- Division of Gastroenterology, Dallas Methodist Medical Center, Dallas, Texas, USA
| | - Adam Slivka
- Division of Gastroenterology and Hepatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jennifer S Chennat
- Division of Gastroenterology and Hepatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Virendra Joshi
- Division of Gastroenterology, Louisiana State University Health Center, New Orleans, Louisiana, USA
| | - Divyesh V Sejpal
- Division of Gastroenterology, Northwell Health, Manhasset, New York, USA
| | - Amrita Sethi
- Division of Gastroenterology, Columbia University Medical Center, New York, New York, USA
| | - Raj J Shah
- Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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11
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Endoscopic retrograde cholangiopancreatography and intraductal ultrasonography in the diagnosis of autoimmune pancreatitis and IgG4-related sclerosing cholangitis. J Med Ultrason (2001) 2021; 48:573-580. [PMID: 34331625 DOI: 10.1007/s10396-021-01114-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/10/2021] [Indexed: 12/17/2022]
Abstract
Endoscopic retrograde cholangiopancreatography is used to evaluate the narrowing of the main pancreatic duct in autoimmune pancreatitis (AIP) and biliary stricture in IgG4-related sclerosing cholangitis (IgG4-SC). Intraductal ultrasonography enables detailed visualization of the thickening of the bile duct wall in IgG4-SC. Pancreatic cancer, cholangiocarcinoma, and primary sclerosing cholangitis are important mimicking conditions of AIP and IgG4-SC. Diffuse or segmental stricture without marked upstream dilatation is a typical pancreatographic finding in AIP. By contrast, a single, short stricture with marked upstream dilatation is a typical finding in pancreatic cancer. The cholangiogram of IgG4-SC is classified into four types based on biliary stricture location, and this cholangiogram classification is useful for the differential diagnosis of IgG4-SC. Endoscopic retrograde cholangiography can be used to distinguish between IgG4-SC and primary sclerosing cholangitis. A segmental/long and intrapancreatic stricture is a characteristic finding of IgG4-SC, whereas band-like strictures, a beaded or pruned-tree appearance, and diverticulum-like outpouching are characteristic of primary sclerosing cholangitis. The characteristic intraductal ultrasonographic findings of circular-symmetrical wall thickening, smooth outer and inner margins, and homogeneous internal echo at the biliary stricture site are useful for diagnosis of IgG4-SC. Thickening of the bile duct wall at non-stricture sites is also a typical intraductal ultrasonographic finding of IgG4-SC and can be used for differential diagnosis from cholangiocarcinoma. Transpapillary bile duct and duodenal papilla biopsy during endoscopic retrograde cholangiopancreatography are also useful in the diagnosis of IgG4-SC.
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12
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Villaverde A, Giménez FI, Manazzoni D, Pizzala JE, Abecia VH, Mahler MA, Marcolongo MM. Cholangioscopy findings in IgG4-related sclerosing cholangitis. Endoscopy 2021; 53:E289-E290. [PMID: 33032352 DOI: 10.1055/a-1264-6736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Augusto Villaverde
- Gastroenterology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Dante Manazzoni
- Gastroenterology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Juan E Pizzala
- Gastroenterology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Victor H Abecia
- Gastroenterology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Mariano M Marcolongo
- Gastroenterology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
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Hori Y, Chari ST, Tsuji Y, Takahashi N, Inoue D, Hart PA, Uehara T, Horibe M, Yamamoto S, Satou A, Zhang L, Notohara K, Naitoh I, Nakazawa T. Diagnosing Biliary Strictures: Distinguishing IgG4-Related Sclerosing Cholangitis From Cholangiocarcinoma and Primary Sclerosing Cholangitis. Mayo Clin Proc Innov Qual Outcomes 2021; 5:535-541. [PMID: 34195545 PMCID: PMC8240333 DOI: 10.1016/j.mayocpiqo.2021.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023] Open
Abstract
Biliary strictures caused by inflammation or fibrosis lead to jaundice and cholangitis which often make it difficult to distinguish malignant strictures. In cases when malignancy cannot be excluded, surgery is often performed. The concept of immunoglobulin G4 (IgG4)-related sclerosing cholangitis (SC) as a benign biliary stricture was recently proposed. The high prevalence of the disease in Asian countries has resulted in multiple diagnostic and treatment guidelines; however, there is need to formulate a standardized diagnostic strategy among various countries considering the utility, invasiveness, and cost-effectiveness. We evaluated accuracies of various diagnostic modalities for biliary strictures comparing pathology in the Delphi meetings which were held in Rochester, MN. The diagnostic utility for each modality was graded according to the experts, including gastroenterologists, endoscopists, radiologists, and pathologists from the United States and Japan. Diagnostic utility of 10 modalities, including serum IgG4 level, noninvasive imaging, endoscopic ultrasound, endoscopic retrograde cholangiopancreatography-related diagnostic procedures were advocated and the reasons were specified. Serum IgG4 level, noninvasive imaging, diagnostic endoscopic ultrasound and intraductal ultrasonography under endoscopic retrograde cholangiopancreatography were recognized as useful modalities for the diagnosis. The information in this article will aid in the diagnosis of biliary strictures particularly for distinguishing IgG4-SC from cholangiocarcinoma and/or primary SC.
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Key Words
- AIP, autoimmune pancreatitis
- CT, computed tomography
- ERC, endoscopic retrograde cholangiography
- ERCP, endoscopic retrograde cholangiopancreatography
- EUS, endoscopic ultrasound
- FNA, fine-needle aspiration
- IDUS, intraductal ultrasonography
- IgG4, immunoglobulin G4
- IgG4-RD, IgG4-related disease
- IgG4-SC, IgG4-related sclerosing cholangitis
- MRCP, magnetic resonance cholangiopancreatography
- MRI, magnetic resonance imaging
- PSC, primary sclerosing cholangitis
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Affiliation(s)
- Yasuki Hori
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Suresh T. Chari
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Yoshihisa Tsuji
- Department of General Medicine, Sapporo Medical University, Sapporo, Japan
| | | | - Dai Inoue
- Department of Radiology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Phil A. Hart
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Takeshi Uehara
- Department of Laboratory Medicine, Shinshu University, Matsumoto, Japan
| | - Masayasu Horibe
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Satoshi Yamamoto
- Department of Gastroenterology, Bantane Hospital, Fujita Health University, Nagoya, Japan
| | - Akira Satou
- Department of Surgical Pathology, Aichi Medical University Hospital, Nagakute, Japan
| | - Lizhi Zhang
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Kenji Notohara
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takahiro Nakazawa
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Waldthaler A, Schramm C, Bergquist A. Present and future role of endoscopic retrograde cholangiography in primary sclerosing cholangitis. Eur J Med Genet 2021; 64:104231. [PMID: 33905896 DOI: 10.1016/j.ejmg.2021.104231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/12/2022]
Abstract
Primary sclerosing cholangitis (PSC) is a rare, inflammatory cholestatic liver disease that causes biliary strictures which can lead to secondary complications. About 30-50% of PSC patients develop dominant strictures (DS) in the biliary tree, which are both the cause of jaundice and bacterial cholangitis as well as predilection spots for development of neoplastic development. Cancer is the most common cause of death in PSC. A central concern is to distinguish malignant from benign strictures, which eventually is done by invasive methods to obtain a brush cytology or biopsy sample, in most cases via endoscopic retrograde cholangiography-pancreatography (ERCP). Since medical therapies, like ursodesoxycholic acid or immunosuppressive drugs have no proven effect, therapeutic ERCP has become the primary management strategy to improve symptoms and in some patients may slow down disease progression. This article aims at outlining the current and emerging methods in ERCP in PSC patients.
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Affiliation(s)
- A Waldthaler
- Department of Medicine Huddinge, Functional Unit Endoscopy, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; European Reference Network for Hepatological Diseases (ENR RARE-LIVER), Sweden.
| | - C Schramm
- Department of Medicine and Martin Zeitz Center for Rare Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network for Hepatological Diseases (ENR RARE-LIVER), Sweden
| | - A Bergquist
- Department of Medicine Huddinge, Unit of Gastroenterology and Rheumatology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; European Reference Network for Hepatological Diseases (ENR RARE-LIVER), Sweden
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Jung YJ, Moon SH, Kim MH. Role of Endoscopic Procedures in the Diagnosis of IgG4-Related Pancreatobiliary Disease. Chonnam Med J 2021; 57:44-50. [PMID: 33537218 PMCID: PMC7840337 DOI: 10.4068/cmj.2021.57.1.44] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 12/16/2022] Open
Abstract
The emergence of the disease entity of glucocorticoid-responsive systemic immunoglobulin G4 (IgG4)-related pancreatobiliary disease has generated substantial attention among the international gastroenterology society. IgG4-related pancreatobiliary disease includes type 1 autoimmune pancreatitis (AIP) and IgG4-related sclerosing cholangitis (IgG4-SC). The typical manifestations of IgG4-related pancreatobiliary disease are cholestatic liver dysfunction, obstructive jaundice, and weight loss, although it may present with no clinical symptoms. Since it mimics tumors on imaging, AIP/IgG4-SC may often be misdiagnosed as pancreatic or biliary cancer. The endoscopic armamentarium for the diagnosis of IgG4-related pancreatobiliary disease includes endoscopic ultrasonography, intraductal ultrasonography, endoscopic retrograde cholangiopancreatography, and cholangioscopy. The role of endoscopic tissue acquisition is two-fold in the diagnosis of IgG4-related pancreatobiliary disease: exclusion of cancer and procurement of histopathological proof for diagnosis of AIP/IgG4-SC, which can also be achieved by adding the immunohistochemistry for IgG4. Our review article addresses the role of various endoscopic examinations in diagnosing IgG4-related pancreatobiliary disease, focusing on the differentiation of this condition from pancreatobiliary malingnancies.
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Affiliation(s)
- Ye-Ji Jung
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Sung-Hoon Moon
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.,Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Korea
| | - Myung-Hwan Kim
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Ishii Y, Serikawa M, Tsuboi T, Kawamura R, Tsushima K, Nakamura S, Hirano T, Fukiage A, Ikemoto J, Kiyoshita Y, Saeki S, Tamura Y, Chayama K. Usefulness of peroral cholangioscopy in the differential diagnosis of IgG4-related sclerosing cholangitis and extrahepatic cholangiocarcinoma: a single-center retrospective study. BMC Gastroenterol 2020; 20:287. [PMID: 32831026 PMCID: PMC7445926 DOI: 10.1186/s12876-020-01429-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 08/17/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND In the diagnosis of IgG4-related sclerosing cholangitis (IgG4-SC), differentiation from extrahepatic cholangiocarcinoma (ECC) is extremely important but is still a clinical challenge. This study aimed to elucidate the usefulness of peroral cholangioscopy (POCS) for the differential diagnosis between IgG4-SC and ECC. METHODS POCS findings for bile duct stricture were retrospectively evaluated in 17 patients with IgG4-SC diagnosed at the Hiroshima University Hospital and 53 patients with surgically resected infiltrating ECC. Mucosal surface, dilated vessels (tortuosity, caliber alteration, and disruption), and easily bleeding were compared between the groups. RESULTS The stricture sites of IgG4-SC evaluated by POCS were 10 extrapancreatic bile ducts and 9 intrapancreatic bile ducts. In patients with IgG4-SC, smooth mucosal surface was observed in 89% (17/19), dilated vessels in 58% (11/19) [tortuosity 82% (9/11), caliber alteration 18% (2/11), and disruption 9% (1/11)], and easily bleeding in 0%. Irregular mucosal surface and easily bleeding were observed significantly more frequently in ECC (both P < 0.001). The frequency of caliber alteration and disruption of dilated vessels was significantly less in IgG4-SC (P < 0.001 and 0.005, respectively). The sensitivity and specificity of POCS in the diagnosis of ECC were 96 and 89%, respectively. Dilated vessels in IgG4-SC were observed significantly more frequently in the extrapancreatic bile duct, especially the hilar bile duct (P = 0.006). Concerning image evaluation, the interobserver agreement was κ = 0.719, and the intraobserver agreement was κ = 0.768 and 0.754. CONCLUSIONS Characteristic POCS findings of the stricture sites in IgG4-SC were smooth mucosal surface, dilated vessels without caliber alteration and disruption, and lack of easily bleeding. These POCS findings are extremely useful for distinguishing between IgG4-SC and ECC.
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Affiliation(s)
- Yasutaka Ishii
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Masahiro Serikawa
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tomofumi Tsuboi
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Ryota Kawamura
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Ken Tsushima
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Shinya Nakamura
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tetsuro Hirano
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Ayami Fukiage
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Juri Ikemoto
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Yusuke Kiyoshita
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Sho Saeki
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Yosuke Tamura
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Role of Peroral Cholangioscopy in the Diagnosis of Primary Sclerosing Cholangitis. Diagnostics (Basel) 2020; 10:diagnostics10050268. [PMID: 32365686 PMCID: PMC7277921 DOI: 10.3390/diagnostics10050268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022] Open
Abstract
Primary sclerosing cholangitis (PSC) is characterized by idiopathic biliary stricture followed by progressive cholestasis and fibrosis. When diagnosing PSC, its differentiation from other types of sclerosing cholangitis and cholangiocarcinoma is necessary. The cholangioscopic findings of PSC have not been investigated sufficiently. PSC and IgG4-related sclerosing cholangitis are difficult to distinguish by peroral cholangioscopy (POCS), but POCS is useful for excluding cholangiocarcinoma. POCS findings vary according to the condition and stage of disease. In the active phase, findings such as mucosal erythema, ulceration, fibrinous white exudate, and an irregular surface are observed and may reflect strong inflammation in the biliary epithelium. On the other hand, findings such as scarring, pseudodiverticula, and bile duct stenosis appear in the chronic phase and may reflect fibrosis and stenosis resulting from repeated inflammation. Observation of inside the bile duct by POCS might confirm the current PSC activity. Because POCS offers not only information regarding the diagnosis of PSC and PSC-associated cholangiocarcinoma but also the current statuses of biliary inflammation and stenosis, POCS could significantly contribute to the diagnosis and treatment of PSC once the characteristic findings of PSC are confirmed by future studies.
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18
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Abstract
OBJECTIVE. The purpose of this article is to present the pathologic and clinical features of IgG4-related sclerosing cholangitis (ISC), illustrate the associated imaging findings, and discuss treatment of the disorder. CONCLUSION. ISC is an inflammatory disorder involving the biliary system and resulting in strictures. Although often associated with autoimmune pancreatitis, it may be an isolated disease. Differentiation of ISC from other forms of cholangitis and cholangiocarcinoma is difficult but necessary for management. Imaging is important in diagnosing and assessing the extent of disease and planning a management strategy.
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19
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Usefulness of digital cholangioscopy for IgG4-related cholangitis diagnosis and cholangiocarcinoma exclusion. GASTROENTEROLOGIA Y HEPATOLOGIA 2019; 42:625-627. [PMID: 31387768 DOI: 10.1016/j.gastrohep.2019.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/07/2019] [Accepted: 04/14/2019] [Indexed: 11/21/2022]
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20
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Chapman MH, Thorburn D, Hirschfield GM, Webster GGJ, Rushbrook SM, Alexander G, Collier J, Dyson JK, Jones DE, Patanwala I, Thain C, Walmsley M, Pereira SP. British Society of Gastroenterology and UK-PSC guidelines for the diagnosis and management of primary sclerosing cholangitis. Gut 2019; 68:1356-1378. [PMID: 31154395 PMCID: PMC6691863 DOI: 10.1136/gutjnl-2018-317993] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/21/2019] [Accepted: 03/24/2019] [Indexed: 12/11/2022]
Abstract
These guidelines on the management of primary sclerosing cholangitis (PSC) were commissioned by the British Society of Gastroenterology liver section. The guideline writing committee included medical representatives from hepatology and gastroenterology groups as well as patient representatives from PSC Support. The guidelines aim to support general physicians, gastroenterologists and surgeons in managing adults with PSC or those presenting with similar cholangiopathies which may mimic PSC, such as IgG4 sclerosing cholangitis. It also acts as a reference for patients with PSC to help them understand their own management. Quality of evidence is presented using the AGREE II format. Guidance is meant to be used as a reference rather than for rigid protocol-based care as we understand that management of patients often requires individual patient-centred considerations.
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Affiliation(s)
- Michael Huw Chapman
- GI Division, UCL Hospitals NHS Foundation Trust, London, UK
- Liver Unit, Royal Free London NHS Foundation Trust, London, UK
| | | | - Gideon M Hirschfield
- Toronto Centre for Liver Disease, University Health Network and University of Toronto, Toronto, Canada
| | | | - Simon M Rushbrook
- Department of Hepatology, Norfolk and Norwich University Hospitals NHS Trust, Norwich, UK
| | | | | | - Jessica K Dyson
- Hepatology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
- Institute of Cellular Medicine, Newcastle University, Newcastle, UK
| | - David Ej Jones
- Institute of Cellular Medicine, Newcastle University, Newcastle, UK
| | - Imran Patanwala
- Gastroenterology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
- University of Liverpool, Liverpool, UK
| | | | | | - Stephen P Pereira
- GI Division, UCL Hospitals NHS Foundation Trust, London, UK
- Institute for Liver & Digestive Health, University College London, London, UK
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21
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Ishida Y, Itoi T, Okabe Y. Current Status and Future Perspective in Cholangiopancreatoscopy. ACTA ACUST UNITED AC 2019; 17:327-341. [DOI: 10.1007/s11938-019-00238-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Nakazawa T. Difficulty in the diagnosis of isolated immunoglobulin G4-related sclerosing cholangitis. Dig Endosc 2019; 31:391-392. [PMID: 30920057 DOI: 10.1111/den.13407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Takahiro Nakazawa
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
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23
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Vashi B, Khosroshahi A. IgG4-Related Disease with Emphasis on Its Gastrointestinal Manifestation. Gastroenterol Clin North Am 2019; 48:291-305. [PMID: 31046976 DOI: 10.1016/j.gtc.2019.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IgG4-related disease is an immune-mediated fibroinflammatory condition with a diverse spectrum of organ involvement, commonly in the pancreas and bile ducts among other organs such as salivary and lacrimal glands. Classic histopathologic findings are the gold standard for confirmation of diagnosis, although diagnosis remains challenging, as biomarkers to date are neither sufficient nor necessary. Glucocorticoids are the most effective initial treatment, generally having a dramatic response, although limited clinical evidence exists regarding effective maintenance therapy. This review summarizes key GI manifestations of this condition for the practicing gastroenterologist and addresses the pathology, disease mechanism, and current therapeutic recommendations.
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Affiliation(s)
- Bijal Vashi
- Department of Medicine, Emory University, 200 Whitehead Building, 615 Michael Street, Atlanta, GA 30322, USA
| | - Arezou Khosroshahi
- Department of Medicine, Emory University, 244 Whitehead Building, 615 Michael Street, Atlanta, GA 30322, USA.
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Abstract
Hepatobiliary disorders are commonly encountered in patients with inflammatory bowel disease (IBD). Although primary sclerosing cholangitis is the stereotypical hepatobiliary disorder associated with IBD, other diseases, including autoimmune hepatitis and nonalcoholic fatty liver disease, also are encountered in this population. Several agents used for treatment of IBD may cause drug-induced liver injury, although severe hepatotoxicity occurs infrequently. Furthermore, reactivation of hepatitis B virus infection may occur in patients with IBD treated with systemic corticosteroids and biologic agents.
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Affiliation(s)
- Mahmoud Mahfouz
- Department of Internal Medicine, Mount Sinai Medical Center, 4300 Alton Road, Suite 301, Miami Beach, FL 33140, USA
| | - Paul Martin
- Division of Gastroenterology and Hepatology, University of Miami Miller School of Medicine, 1120 Northwest 14 Street #1115, Miami, FL 33136, USA.
| | - Andres F Carrion
- Division of Gastroenterology and Hepatology, University of Miami Miller School of Medicine, 1120 Northwest 14 Street #1115, Miami, FL 33136, USA
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25
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Kamisawa T, Nakazawa T, Tazuma S, Zen Y, Tanaka A, Ohara H, Muraki T, Inui K, Inoue D, Nishino T, Naitoh I, Itoi T, Notohara K, Kanno A, Kubota K, Hirano K, Isayama H, Shimizu K, Tsuyuguchi T, Shimosegawa T, Kawa S, Chiba T, Okazaki K, Takikawa H, Kimura W, Unno M, Yoshida M. Clinical practice guidelines for IgG4-related sclerosing cholangitis. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2019; 26:9-42. [PMID: 30575336 PMCID: PMC6590186 DOI: 10.1002/jhbp.596] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IgG4‐related sclerosing cholangitis (IgG4‐SC) is a distinct type of cholangitis frequently associated with autoimmune pancreatitis and currently recognized as a biliary manifestation of IgG4‐related disease. Although clinical diagnostic criteria of IgG4‐SC were established in 2012, differential diagnosis from primary sclerosing cholangitis and cholangiocarcinoma is sometimes difficult. Furthermore, no practical guidelines for IgG4‐SC are available. Because the evidence level of most articles retrieved through searching the PubMed, Cochrane Library, and Igaku Chuo Zasshi databases was below C based on the systematic review evaluation system of clinical practice guidelines MINDS 2014, we developed consensus guidelines using the modified Delphi approach. Three committees (a guideline creating committee, an expert panelist committee for rating statements according to the modified Delphi method, and an evaluating committee) were organized. Eighteen clinical questions (CQs) with clinical statements were developed regarding diagnosis (14 CQs) and treatment (4 CQs). Recommendation levels for clinical statements were set using the modified Delphi approach. The guidelines explain methods for accurate diagnosis, and safe and appropriate treatment of IgG4‐SC.
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Affiliation(s)
- Terumi Kamisawa
- Department of Internal Medicine, Tokyo Metropolitan, Komagome Hospital, Tokyo, Japan
| | - Takahiro Nakazawa
- Department of Gastroenterology, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan
| | - Susumu Tazuma
- Department of General Internal Medicine, Hiroshima University Graduate School of Biomedical & Health Science, Hiroshima, Japan
| | - Yoh Zen
- Department of Diagnostic Pathology, Kobe University, Kobe, Japan
| | - Atsushi Tanaka
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | - Hirotaka Ohara
- Department of Community-Based Medical Education, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takashi Muraki
- Department of Medicine, Gastroenterology, Shinshu University, Matsumoto, Nagano, Japan
| | - Kazuo Inui
- Department of Gastroenterology, Second Teaching Hospital, Fujita Health University, Nagoya, Japan
| | - Dai Inoue
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takayoshi Nishino
- Department of Gastroenterology, Tokyo Womens' Medical University Yachiyo Medical Center, Yachiyo, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Kenji Notohara
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Atsushi Kanno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kensuke Kubota
- Department of Endoscopy, Yokohama City University Hospital, Yokohama, Japan
| | - Kenji Hirano
- Department of Gastroenterology, Tokyo Takanawa Hospital, Tokyo, Japan
| | - Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Kyoko Shimizu
- Department of Gastroenterology, Tokyo Womens' Medical University, Tokyo, Japan
| | | | - Tooru Shimosegawa
- Division of Gastroenterology, South-Miyagi Medical Center, Ohgawara, Japan
| | - Shigeyuki Kawa
- Department of Internal Medicine, Matsumoto Dental University, Matsumoto, Japan
| | | | - Kazuichi Okazaki
- The Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Moriguchi, Japan
| | - Hajime Takikawa
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Kimura
- Faculty of Medicine, Departments of Gastroenterology and Gastroenterological, General, Breast, and Thyroid Surgery, Yamagata University, Yamagata, Japan
| | - Michiaki Unno
- Division of Hepato-Biliary Pancreatic Surgery, Tohoku University Graduate School, of Medicine, Sendai, Japan
| | - Masahiro Yoshida
- Department of Hepato-Biliary-Pancreatic and Gastrointestinal Surgery, School of Medicine, International University of Health and Welfare, Ichikawa, Japan
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26
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Lee YN, Moon JH, Choi HJ. Role of Image-Enhanced Endoscopy in Pancreatobiliary Diseases. Clin Endosc 2018; 51:541-546. [PMID: 30508879 PMCID: PMC6283762 DOI: 10.5946/ce.2018.203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 11/16/2018] [Indexed: 12/13/2022] Open
Abstract
Recent advances in cholangiopancreatoscopy technology permit image-enhanced endoscopy (IEE) for pancreatobiliary diseases. There are limitations in endoscopy performance and in the study of the clinical role of IEE in bile duct or pancreatic duct diseases. However, currently available IEEs during cholangiopancreatoscopy including traditional dye-aided chromoendoscopy, autofluorescence imaging, narrow-band imaging, and i-Scan have been evaluated and reported previously. Although the clinical role of IEE in pancreatobiliary diseases should be verified in future studies, IEE is a useful promising tool in the evaluation of bile duct or pancreatic duct mucosal lesions.
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Affiliation(s)
- Yun Nah Lee
- Digestive Disease Center and Research Institute, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Jong Ho Moon
- Digestive Disease Center and Research Institute, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Hyun Jong Choi
- Digestive Disease Center and Research Institute, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea
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Ayoub F, Yang D, Draganov PV. Cholangioscopy in the digital era. Transl Gastroenterol Hepatol 2018; 3:82. [PMID: 30505969 DOI: 10.21037/tgh.2018.10.08] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
Cholangioscopy allows direct visualization and subsequent therapeutic maneuvers of the biliary ductal system. With advances in endoscopic and imaging technology, cholangioscopy has become an important modality for the diagnosis of indeterminate biliary strictures and an essential therapeutic tool for difficult to remove biliary stones. Enhanced imaging and operability of the latest generation cholangioscopes have further expanded their clinical applications to include ductal tumor ablation, gallbladder drainage, access to difficult to reach branches of the biliary tree, and biliary foreign body manipulation. In this review, we discuss the technical evolution of cholangioscopy into the digital era and review the clinical evidence supporting its use in the diagnosis and therapy of biliary tract disease.
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Affiliation(s)
- Fares Ayoub
- Department of Medicine, Hepatology and Nutrition, University of Florida College of Medicine, Gainesville, FL, USA
| | - Dennis Yang
- Division of Gastroenterology, Hepatology and Nutrition, University of Florida College of Medicine, Gainesville, FL, USA
| | - Peter V Draganov
- Division of Gastroenterology, Hepatology and Nutrition, University of Florida College of Medicine, Gainesville, FL, USA
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Ishida Y, Okabe Y, Yasumoto M, Naito Y, Nakama Y, Kitasato Y, Ishikawa H, Hisaka T, Tsuruta O, Torimura T. Ex vivo magnifying endoscopic observation of bile duct mucosa using narrowband imaging. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2018; 25:433-439. [DOI: 10.1002/jhbp.581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yusuke Ishida
- Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; 67 Asahi-machi Kurume Fukuoka 830-0011 Japan
| | - Yoshinobu Okabe
- Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; 67 Asahi-machi Kurume Fukuoka 830-0011 Japan
| | - Makiko Yasumoto
- Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; 67 Asahi-machi Kurume Fukuoka 830-0011 Japan
| | - Yoshiki Naito
- Department of Diagnostic Pathology; Kurume University Hospital; Kurume Fukuoka Japan
| | - Yohei Nakama
- Department of Surgery; Iizuka City Hospital; Iizuka Fukuoka Japan
| | - Yuhei Kitasato
- Department of Surgery; Kurume University School of Medicine; Kurume Fukuoka Japan
| | - Hiroto Ishikawa
- Department of Surgery; Kurume University School of Medicine; Kurume Fukuoka Japan
| | - Toru Hisaka
- Department of Surgery; Kurume University School of Medicine; Kurume Fukuoka Japan
| | - Osamu Tsuruta
- Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; 67 Asahi-machi Kurume Fukuoka 830-0011 Japan
| | - Takuji Torimura
- Division of Gastroenterology; Department of Medicine; Kurume University School of Medicine; 67 Asahi-machi Kurume Fukuoka 830-0011 Japan
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Sandha G, D'Souza P, Halloran B, Montano-Loza AJ. A Cholangioscopy-Based Novel Classification System for the Phenotypic Stratification of Dominant Bile Duct Strictures in Primary Sclerosing Cholangitis-the Edmonton Classification. J Can Assoc Gastroenterol 2018; 1:174-180. [PMID: 31294358 PMCID: PMC6542244 DOI: 10.1093/jcag/gwy020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Primary sclerosing cholangitis (PSC) is a chronic inflammatory condition causing bile
duct strictures. Differentiating inflammatory strictures from malignant transformation
is challenging. Cholangioscopy allows direct visualization with the option to biopsy. We
describe our experience of cholangioscopy in PSC and propose a novel stricture
classification system based on cholangioscopic findings. Methods All patients with PSC and a dominant stricture referred for cholangioscopy were
reviewed. Based on visual characteristics with direct cholangioscopy, we propose a novel
classification system for the extrahepatic form of PSC. Results The proposed Edmonton Classification system for extrahepatic PSC strictures consists of
the following phenotypes: 1) ‘inflammatory type’, with mucosal erythema and active
inflammatory exudate, 2) ‘fibro-stenotic type’, with concentric fibrotic scars, and 3)
‘nodular or mass-forming type’, with a mass in the involved segment of extrahepatic bile
duct. From 2011–2017, 30 patients with PSC and a dominant stricture (21 M, mean age 46
years) underwent 32 cholangioscopy procedures. Cholangioscopy was technically successful
in 29 of 32 procedures (91%). In these 29 stricture cases, inflammatory type was seen in
16 (55%), fibro-stenotic type in seven (24%) and nodular or mass-forming type in five
(17%). In one (4%) procedure, there was no stricture or abnormality identified. Conclusion Cholangioscopy is effective and safe for the evaluation of dominant biliary strictures
in PSC. Based on our experience with cholangioscopy, we propose a novel classification
system of extrahepatic PSC phenotypes: the Edmonton Classification.
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Affiliation(s)
- Gurpal Sandha
- The PSC Study Group, Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Alberta, Canada
| | - Pernilla D'Souza
- The PSC Study Group, Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Alberta, Canada
| | - Brendan Halloran
- The PSC Study Group, Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Alberta, Canada
| | - Aldo J Montano-Loza
- The PSC Study Group, Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Alberta, Canada
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30
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Isayama H, Tazuma S, Kokudo N, Tanaka A, Tsuyuguchi T, Nakazawa T, Notohara K, Mizuno S, Akamatsu N, Serikawa M, Naitoh I, Hirooka Y, Wakai T, Itoi T, Ebata T, Okaniwa S, Kamisawa T, Kawashima H, Kanno A, Kubota K, Tabata M, Unno M, Takikawa H. Clinical guidelines for primary sclerosing cholangitis 2017. J Gastroenterol 2018; 53:1006-1034. [PMID: 29951926 PMCID: PMC8930933 DOI: 10.1007/s00535-018-1484-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/11/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND Primary sclerosing cholangitis (PSC) is relatively rare disease and pathogenesis and methods of treatments were still not established. Then, we had conducted the making clinical guidelines to manage patients with PSC based on the literature review and expert opinions. These clinical guidelines were made for the medical doctors on the management of PSC, except child case of PSC. METHODS We had employed modified Delphi method. The production committee decided guidelines, strength of recommendations and evidence level after reviewed literatures systematically, and The Expert panel evaluated those. The Scientific Committee of the Japan Biliary Association (JBA) evaluated revised guidelines, and the Public comments were collected on web site of JBA. RESULTS We had made 16 guidelines about epidemiology/pathophysiology, diagnostics, therapy and prognosis. Also, we had made both diagnostic and therapeutic flow chart. CONCLUSIONS We hope that these guidelines will contribute to the improvement and development of the medical care of PSC.
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Affiliation(s)
- Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Susumu Tazuma
- Department of General Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-ku, Hiroshima, 734-8551 Japan
| | - Norihiro Kokudo
- Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - Atsushi Tanaka
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | - Toshio Tsuyuguchi
- Department of Medicine and Gastroenterology, Chiba University, Chiba, Japan
| | - Takahiro Nakazawa
- Department of Gastroenterology, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan
| | - Kenji Notohara
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Suguru Mizuno
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Nobuhisa Akamatsu
- Artificial Organ and Transplantation Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahiro Serikawa
- Department of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshiki Hirooka
- Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan
| | - Tomoki Ebata
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinji Okaniwa
- Department of Gastroenterology, Iida Municipal Hospital, Nagano, Japan
| | - Terumi Kamisawa
- Department of Internal Medicine, Tokyo Komagome Metropolitan Hospital, Tokyo, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsushi Kanno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi Japan
| | - Keiichi Kubota
- Second Department of Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Masami Tabata
- Department of Surgery, Matsusaka Central General Hospital, Matsusaka, Mie Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi Japan
| | - Hajime Takikawa
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
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31
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The 2016 diagnostic criteria for primary sclerosing cholangitis. J Gastroenterol 2017; 52:838-844. [PMID: 27921168 DOI: 10.1007/s00535-016-1286-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 11/07/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease of unknown cause that is characterized pathologically by an inflammatory and fibrotic process centered on the epithelium, leading to diffuse biliary stenosis and increased wall thickness throughout the intra- and extra-hepatic biliary trees. A nationwide survey in Japan revealed several differences in the clinical aspects of PSC between Japan and Western countries. PSC was recently designated an intractable hepatobiliary disease in Japan. The aim of this study was to establish Japanese diagnostic criteria for PSC according to the current Japanese conditions. METHODS The Intractable Hepato-Biliary Diseases Study Group in Japan of the Committee of Research on Measures for Intractable Diseases established a working group consisting of researchers specializing in PSC and proposed the 2016 Japanese diagnostic criteria for PSC. RESULTS The diagnostic criteria consisted of the major and minor items. Major items are directly related to bile duct changes based on biliary tract imaging and an increased alkaline phosphatase level. Minor items consist of an association with inflammatory bowel disease and liver histology. CONCLUSION The diagnostic criteria for PSC are useful for general physicians in practice.
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32
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Advances in Therapeutic Cholangioscopy. Gastroenterol Res Pract 2016; 2016:5249152. [PMID: 27403156 PMCID: PMC4925961 DOI: 10.1155/2016/5249152] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/11/2016] [Accepted: 04/18/2016] [Indexed: 12/15/2022] Open
Abstract
Nowadays, cholangioscopy is an established modality in diagnostic and treatment of pancreaticobiliary diseases. The more widespread use and the recent development of new technologies and accessories had renewed the interest of endoscopic visualization of the biliary tract, increasing the range of indications and therapeutic procedures, such as diagnostic of indeterminate biliary strictures, lithotripsy of difficult bile duct stones, ablative techniques for intraductal malignancies, removal of foreign bodies and gallbladder drainage. These endoscopic interventions will probably be the last frontier in the near future. This paper presents the new advances in therapeutic cholangioscopy, focusing on the current clinical applications and on research areas.
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Zen Y, Kawakami H, Kim JH. IgG4-related sclerosing cholangitis: all we need to know. J Gastroenterol 2016; 51:295-312. [PMID: 26817943 DOI: 10.1007/s00535-016-1163-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 12/24/2015] [Indexed: 02/04/2023]
Abstract
Our knowledge and experience of IgG4-related sclerosing cholangitis (ISC) have expanded in the last decade. ISC is one of the common organ manifestations of IgG4-related disease (IgG4-RD); approximately 60 % of patients with this systemic condition have ISC in the proximal and/or distal bile ducts. ISC needs to be discriminated from primary sclerosing cholangitis, cholangiocarcinoma, and other rare forms of lymphoplasmacytic cholangiopathy (e.g., follicular cholangitis and sclerosing cholangitis with granulocytic epithelial lesions). Its diagnosis requires a multidisciplinary approach, in which serology, histology, and imaging play crucial roles. Treatments with high-dose corticosteroids typically lead to the rapid and consistent induction of disease remission. Another promising therapeutic approach is B-cell depletion with rituximab. Although disease relapse is relatively common, provided that appropriate treatments are administered, ISC is considered a "benign" disease with a low risk of liver failure and biliary malignancy. Its molecular pathology is characterized by Th2-dominant immune reactions, regulatory T-cell activation, and CCL1-CCR8 interactions. Particular subsets of B cells such as plasmablasts and regulatory B cells also expand. A recent global proteomic study demonstrated that three significantly activated immunological cascades in ISC were all B-cell- or immunoglobulin-related (Fc-gamma receptor-mediated phagocytosis, B-cell receptor signaling pathway, and Fc-epsilon receptor I signaling pathway), suggesting the crucial roles of B cells in the underlying immune reactions. Despite the expansion of our knowledge of the pathophysiology of ISC, the exact role of IgG4 remains unclear. A better understanding of its immunopathology will offer some potential drug targets for this emerging biliary disease.
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Affiliation(s)
- Yoh Zen
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-Cho, Kobe, 650-0017, Japan.
| | - Hiroshi Kawakami
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - Jung Hoon Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Korea
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Nayagam JS, Pereira SP, Devlin J, Harrison PM, Joshi D. Controversies in the management of primary sclerosing cholangitis. World J Hepatol 2016; 8:265-272. [PMID: 26925200 PMCID: PMC4757649 DOI: 10.4254/wjh.v8.i5.265] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/13/2015] [Accepted: 01/22/2016] [Indexed: 02/06/2023] Open
Abstract
Primary sclerosing cholangitis (PSC) remains a rare but significant disease, which affects mainly young males in association with inflammatory bowel disease. There have been few advances in the understanding of the pathogenesis of the condition and no therapeutics with proven mortality benefit aside from liver transplantation. There remain areas of controversy in the management of PSC which include the differentiation from other cholangiopathies, in particular immunoglobulin G4 related sclerosing cholangitis, the management of dominant biliary strictures, and the role of ursodeoxycholic acid. In addition, the timing of liver transplantation in PSC remains difficult to predict with standard liver severity scores. In this review, we address these controversies and highlight the latest evidence base in the management of PSC.
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35
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Abstract
Biliary strictures frequently present a diagnostic challenge during pre-operative evaluation to determine their benign or malignant nature. A variety of benign conditions, such as primary sclerosing cholangitis (PSC) and IgG4-related sclerosing cholangitis, frequently mimic malignancies. In addition, PSC and other chronic biliary diseases increase the risk of cholangiocarcinoma and so require ongoing vigilance. Although traditional methods of evaluation including imaging, detection of circulating tumour markers, and sampling by endoscopic ultrasound and endoscopic retrograde cholangiopancreatography have a high specificity, they suffer from low sensitivity. Currently, up to 20% of biliary strictures remain indeterminate after pre-operative evaluation and necessitate surgical intervention for a definitive diagnosis. The discovery of novel biomarkers, new imaging modalities and advanced endoscopic techniques suggests that a multimodality approach might lead to better diagnostic accuracy.
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36
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Abstract
The major causes of benign biliary strictures include surgery, chronic pancreatitis, primary sclerosing cholangitis, and autoimmune cholangitis. Biliary leaks mainly occur after surgery and, rarely, abdominal trauma. These conditions may benefit from a nonsurgical approach in which endoscopic retrograde cholangiopancreatography (ERCP) plays a pivotal role in association with other minimally invasive approaches. This approach should be evaluated for any injury before deciding about the method for repair. ERCP, associated with peroral cholangioscopy, plays a growing role in characterizing undeterminate strictures, avoiding both unuseful major surgeries and palliative options that might compromise any further management.
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37
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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; 29:611-25. [PMID: 26381306 DOI: 10.1016/j.bpg.2015.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 04/17/2015] [Accepted: 05/21/2015] [Indexed: 01/31/2023]
Abstract
A new video peroral cholangioscopy (POCS) has been developed with high-quality digital imaging, and its clinical use has been reported. Additionally, direct peroral cholangioscopy (D-POCS) using an ultraslim endoscope has been proposed recently. To improve the diagnostic yield of POCS or D-POCS, image-enhanced endoscopy has been used in combination. Chromoendoscopy with methylene blue staining (ME), autofluorescence imaging (AFI), and narrow-band imaging (NBI) has been evaluated in biliary tract diseases. Observation of the mucosal structure and vessels is reportedly important for distinguishing non-neoplasms from neoplasms. Therefore, NBI is the most promising tool among image-enhanced endoscopies as it can enhance visualization of the mucosal structure and vessels simultaneously. There are currently few reports that have evaluated the utility of POCS or D-POCS based on pathological findings. Thus, endoscopic findings of the bile duct mucosa have not yet been fully established. At present, POCS-guided biopsy should be carried out.
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Affiliation(s)
- Yusuke Ishida
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Fukuoka, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Japan.
| | - Yoshinobu Okabe
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Fukuoka, Japan
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Abstract
IgG4-related disease is a protean condition that mimics many malignant, infectious, and inflammatory disorders. This multi-organ immune-mediated condition links many disorders previously regarded as isolated, single-organ diseases without any known underlying systemic condition. It was recognised as a unified entity only 10 years ago. Histopathology is the key to diagnosis. The three central pathology features of IgG4-related disease are lymphoplasmacytic infiltration, storiform fibrosis, and obliterative phlebitis. The extent of fibrosis is an important determinant of responsiveness to immunosuppressive therapies. IgG4-related disease generally responds to glucocorticoids in its inflammatory stage, but recurrent or refractory cases are common. Important mechanistic insights have been derived from studies of patients treated by B-cell depletion. Greater awareness of this disease is needed to ensure earlier diagnoses, which can prevent severe organ damage, disabling tissue fibrosis, and even death. Identification of specific antigens and T-cell clones that drive the disease will be the first steps to elucidate the pathogenesis of IgG4-related disease.
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Affiliation(s)
- Terumi Kamisawa
- Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Yoh Zen
- Department of Pathology, Kobe University, Kobe, Japan
| | - Shiv Pillai
- Center for Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - John H Stone
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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Joshi D, Webster GJ. Immunoglobulin G4-related sclerosing cholangitis. Hepatology 2015; 61:1432-4. [PMID: 25179687 DOI: 10.1002/hep.27411] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 08/28/2014] [Indexed: 12/24/2022]
Affiliation(s)
- Deepak Joshi
- Department of Gastroenterology, University College London Hospital, London, United Kingdom
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Kanno A, Masamune A, Shimosegawa T. Endoscopic approaches for the diagnosis of autoimmune pancreatitis. Dig Endosc 2015; 27:250-8. [PMID: 25115499 DOI: 10.1111/den.12343] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 08/04/2014] [Indexed: 12/21/2022]
Abstract
Autoimmune pancreatitis (AIP) is characterized by diffuse pancreatic enlargement and irregular narrowing of the main pancreatic duct (MPD). Immunoglobulin (Ig)G4-related sclerosing cholangitis (IgG4-SC) associated with AIP frequently appears as a bile duct stricture. Therefore, it is important to differentiate AIP and IgG4-SC from pancreatic cancer and cholangiocarcinoma or primary sclerosing cholangitis, respectively. Endoscopy plays a central role in the diagnosis of AIP and IgG4-SC because it provides imaging of the MPD and bile duct strictures as well as the ability to obtain tissue samples for histological evaluations. Diffuse irregular narrowing of MPD on endoscopic retrograde cholangiopancreatography (ERCP) is rather specific to AIP, but localized narrowing of the MPD is often difficult to differentiate from MPD stenosis caused by pancreatic cancer. A long stricture (>1/3 the length of the MPD) and lack of upstream dilatation from the stricture (<5 mm) might be key features of AIP on ERCP. Some cholangiographic features, such as segmental strictures, stric tures of the lower bile duct, and long strictures with prestenotic dilatation, are more common in IgG4-SC than in cholangiocarcinoma. Endoscopic ultrasonography (EUS) reveals diffuse hypoechoic pancreatic enlargement, sometimes with hypoechoic inclusions, in patients with AIP. In addition, EUS-elastography and contrast-enhanced harmonic EUS have been developed with promising results. The usefulness of EUS-guided fine-needle aspiration has been increasingly recognized for obtaining adequate tissue samples for the histological diagnosis of AIP. Further improvement of endoscopic procedures and devices will contribute to more accurate diagnosis of AIP and IgG4-SC.
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Affiliation(s)
- Atsushi Kanno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
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41
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Joshi D, Webster GJM. Biliary and hepatic involvement in IgG4-related disease. Aliment Pharmacol Ther 2014; 40:1251-61. [PMID: 25312536 DOI: 10.1111/apt.12988] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 07/30/2014] [Accepted: 09/24/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND IgG4-related disease (IgG4-RD) is a multi-systemic disorder. IgG4-related sclerosing cholangitis (IgG4-SC) is the biliary manifestation of the disease, often in association with autoimmune pancreatitis (AIP). Hepatic manifestations of IgG4-RD are less well described within the literature. AIM To examine and present an overview of IgG4-RD with a focus on the biliary and hepatic manifestations. METHODS An electronic search using Medline was performed. Search items included 'IgG4 multi-system disease, IgG4 associated cholangitis, IgG4 associated liver disease and autoimmune pancreatitis (AIP)'. RESULTS IgG4-RD is characterised by an IgG4-positive lymphoplasmacytic tissue infiltrate, storiform fibrosis and an obliterative phlebitis. The HISORt criteria may be used to establish the diagnosis and incorporate a multi-disciplinary approach involving histology, radiology, serum IgG4 levels and response to steroid therapy. IgG4-SC is the commonest extrapancreatic manifestation of type-1 AIP, while the hepatic manifestations remain poorly defined. Important differential diagnoses include primary sclerosing cholangitis, secondary sclerosing cholangitis, cholangiocarcinoma and pancreatic carcinoma. Current treatment regimens remain ill defined although steroid therapy is used first line unless contraindicated. Patients with relapsing disease or multifocal disease should be considered for azathioprine. Available data would also suggest a role for rituximab. CONCLUSIONS IgG4-related sclerosing cholangitis is a common manifestation of IgG4-related disease which requires a multi-disciplinary approach to establish the diagnosis. Differentiating IgG4-related sclerosing cholangitis from other conditions, both benign and malignant, is challenging, but vital. Steroids remain the mainstay of treatment. Our understanding of the pathogenesis of the hepatic manifestations of IgG4-related disease continues to evolve.
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Affiliation(s)
- D Joshi
- Department of Gastroenterology, University College Hospital, London, UK
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Abstract
OBJECTIVE The objective of this study was to evaluate picture of the major and minor duodenal papillae in patients with autoimmune pancreatitis (AIP). METHODS Endoscopic features of the major and minor papillae were examined in 59 and 13 patients with AIP. After steroid therapy, changes of the major and minor papillae were observed in 5 and 6 patients. The major and minor papillae were observed with narrow band imaging in 24 and 6 patients. Biopsy specimens from the major (n = 50) and minor (n = 13) papillae were immunostained using an anti-IgG4 antibody. RESULTS Endoscopic features of the major and minor papillae were abnormal in 26 patients (44%; swelling [n = 20] and redness [n = 14]) and 5 patients (38%; swelling [n = 5]). Swelling of the pancreatic head, irregular narrowing of the main pancreatic duct of the pancreatic head, stenosis of the lower bile duct, and abundant infiltration of IgG4-positive plasma cells were more frequent in the patients with an abnormal major papilla compared with those with a normal major papilla. On narrow band imaging, dilated vessels were observed in abnormal papillae. After therapy, swelling of the major and minor papillae improved in all 4 and 2 patients. CONCLUSIONS Endoscopic features of the major and minor papillae were abnormal in 44% and 38% of the patients with AIP.
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43
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Kalaitzakis E, Sturgess R, Kaltsidis H, Oppong K, Lekharaju V, Bergenzaun P, Vlavianos P, Sharma H, Westaby D, Webster GJ. Diagnostic utility of single-user peroral cholangioscopy in sclerosing cholangitis. Scand J Gastroenterol 2014; 49:1237-44. [PMID: 25007715 DOI: 10.3109/00365521.2014.936032] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To evaluate the diagnostic utility of single-operator peroral cholangioscopy (SOC) in patients with sclerosing cholangitis. METHODS All patients with sclerosing cholangitis who underwent SOC procedures due to suspicious biliary strictures, in one Swedish and four UK tertiary centers in 2008-2012, were retrospectively enrolled. For each SOC procedure in sclerosing cholangitis, another one attempted due to a single biliary stricture in the same center and calendar year was randomly selected as control. Patients were followed up until death or last clinic visit until November 2012. RESULTS Fifty-four SOC procedures were attempted in 52 sclerosing cholangitis patients (48 with primary sclerosing cholangitis, 4 with IgG4-related sclerosing cholangitis). Cannulation with the SOC system failed more frequently in sclerosing cholangitis (15% vs. 2% in controls; p = 0.015). The sensitivity, specificity, and accuracy of SOC (including tissue sampling) for cancer diagnosis were similar in sclerosing cholangitis and controls (50% vs. 55%, 100% vs. 97%, and 88% vs. 80%, respectively) with largely overlapping confidence intervals. Adverse events were more common in sclerosing cholangitis, due to an increased frequency of cholangitis (11% vs. 2% in controls; p = 0.051). CONCLUSIONS SOC is equally accurate in cancer diagnosis in sclerosing cholangitis and patients with single biliary strictures. However, cholangioscope insertion may be hampered by bile duct narrowing and post-SOC cholangitis is more common in sclerosing cholangitis.
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44
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Kamisawa T, Ohara H, Kim MH, Kanno A, Okazaki K, Fujita N. Role of endoscopy in the diagnosis of autoimmune pancreatitis and immunoglobulin G4-related sclerosing cholangitis. Dig Endosc 2014; 26:627-35. [PMID: 24712522 DOI: 10.1111/den.12289] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 02/19/2014] [Indexed: 12/13/2022]
Abstract
Autoimmune pancreatitis (AIP) must be differentiated from pancreatic carcinoma, and immunoglobulin (Ig)G4-related sclerosing cholangitis (SC) from cholangiocarcinoma and primary sclerosing cholangitis (PSC). Pancreatographic findings such as a long narrowing of the main pancreatic duct, lack of upstream dilatation, skipped narrowed lesions, and side branches arising from the narrowed portion suggest AIP rather than pancreatic carcinoma. Cholangiographic findings for PSC, including band-like stricture, beaded or pruned-tree appearance, or diverticulum-like outpouching are rarely observed in IgG4-SC patients, whereas dilatation after a long stricture of the bile duct is common in IgG4-SC. Transpapillary biopsy for bile duct stricture is useful to rule out cholangiocarcinoma and to support the diagnosis of IgG4-SC with IgG4-immunostaining. IgG4-immunostaining of biopsy specimens from the major papilla advances a diagnosis of AIP. Contrast-enhanced endoscopic ultrasonography (EUS) and EUS elastography have the potential to predict the histological nature of the lesions. Intraductal ultrasonographic finding of wall thickening in the non-stenotic bile duct on cholangiography is useful for distinguishing IgG4-SC from cholangiocarcinoma. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is widely used to exclude pancreatic carcinoma. To obtain adequate tissue samples for the histological diagnosis of AIP, EUS-Tru-cut biopsy or EUS-FNA using a 19-gauge needle is recommended, but EUS-FNA with a 22-gauge needle can also provide sufficient histological samples with careful sample processing after collection and rapid motion of the FNA needles within the pancreas. Validation of endoscopic imaging criteria and new techniques or devices to increase the diagnostic yield of endoscopic tissue sampling should be developed.
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Affiliation(s)
- Terumi Kamisawa
- Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
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Nakazawa T, Naitoh I, Hayashi K, Miyabe K, Simizu S, Joh T. Diagnosis of IgG4-related sclerosing cholangitis. World J Gastroenterol 2013; 19:7661-7670. [PMID: 24282356 PMCID: PMC3837265 DOI: 10.3748/wjg.v19.i43.7661] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/23/2013] [Accepted: 09/29/2013] [Indexed: 02/06/2023] Open
Abstract
IgG4-related sclerosing cholangitis (IgG4-SC) is often associated with autoimmune pancreatitis. However, the diffuse cholangiographic abnormalities observed in IgG4-SC may resemble those observed in primary sclerosing cholangitis (PSC), and the presence of segmental stenosis suggests cholangiocarcinoma (CC). IgG4-SC responds well to steroid therapy, whereas PSC is only effectively treated with liver transplantation and CC requires surgical intervention. Since IgG4-SC was first described, it has become a third distinct clinical entity of sclerosing cholangitis. The aim of this review was to introduce the diagnostic methods for IgG4-SC. IgG4-SC should be carefully diagnosed based on a combination of characteristic clinical, serological, morphological, and histopathological features after cholangiographic classification and targeting of a disease for differential diagnosis. When intrapancreatic stenosis is detected, pancreatic cancer or CC should be ruled out. If multiple intrahepatic stenoses are evident, PSC should be distinguished on the basis of cholangiographic findings and liver biopsy with IgG4 immunostaining. Associated inflammatory bowel disease is suggestive of PSC. If stenosis is demonstrated in the hepatic hilar region, CC should be discriminated by ultrasonography, intraductal ultrasonography, bile duct biopsy, and a higher cutoff serum IgG4 level of 182 mg/dL.
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Gabbert C, Warndorf M, Easler J, Chennat J. Advanced techniques for endoscopic biliary imaging: cholangioscopy, endoscopic ultrasonography, confocal, and beyond. Gastrointest Endosc Clin N Am 2013; 23:625-46. [PMID: 23735107 DOI: 10.1016/j.giec.2013.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Cholangioscopy, endosonography, and confocal microscopy represent important technologies that expand biliary imaging beyond a level previously realized by noninvasive modalities (ultrasonography, computed tomography, and magnetic resonance cholangiopancreatography) and endoscopic retrograde cholangiopancreatography. Endoscopic ultrasonography has shown efficacy for the evaluation of indeterminate biliary strictures; however, this modality seems most reliable for distal bile duct abnormalities and in the setting of a moderate to high pretest probability for malignancy. Further refinement of these technologies, validation of their respective diagnostic criteria, and study within the context of comparative, randomized trials are needed and will contribute greatly to expedient patient care.
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Affiliation(s)
- Charles Gabbert
- Division of Gastroenterology, Hepatology, & Nutrition, University of Pittsburgh Medical Center, 200 Lothrop Street, C Wing, Mezzanine Level, Pittsburgh, PA 15213, USA
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