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Lim C, Ng J, Sarraf B, Vaughan R, Efthymiou M, Zorron Cheng Tao Pu L, Chandran S. Safety and efficacy of Kaffes intraductal self-expanding metal stents in the management of post-liver transplant anastomotic strictures. World J Transplant 2024; 14:91081. [DOI: 10.5500/wjt.v14.i2.91081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/26/2024] [Accepted: 03/25/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Endoscopic management is the first-line therapy for post-liver-transplant anastomotic strictures. Although the optimal duration of treatment with plastic stents has been reported to be 8-12 months, data on safety and duration for metal stents in this setting is scarce. Due to limited access to endoscopic retrograde cholangiopancreatography (ERCP) during the coronavirus disease 2019 pandemic in our centre, there was a change in practice towards increased usage and length-of-stay of the Kaffes biliary intraductal self-expanding stent in patients with suitable anatomy. This was mainly due to the theoretical benefit of Kaffes stents allowing for longer indwelling periods compared to the traditional plastic stents.
AIM To compare the safety and efficacy profile of different stenting durations using Kaffes stents.
METHODS Adult liver transplant recipients aged 18 years and above who underwent ERCP were retrospectively identified during a 10-year period through a database query. Unplanned admissions post-Kaffes stent insertion were identified manually through electronic and scanned medical records. The main outcome was the incidence of complications when stents were left indwelling for 3 months vs 6 months. Stent efficacy was calculated via rates of stricture recurrence between patients that had stenting courses for ≤ 120 d or > 120 d.
RESULTS During the study period, a total of 66 ERCPs with Kaffes insertion were performed in 54 patients throughout their stenting course. In 33 ERCPs, the stent was removed or exchanged on a 3-month interval. No pancreatitis, perforations or deaths occurred. Minor post-ERCP complications were similar between the 3-month (abdominal pain and intraductal migration) and 6-month (abdominal pain, septic shower and embedded stent) groups - 6.1% vs 9.1% respectively, P = 0.40. All strictures resolved at the end of the stenting course, but the stenting course was variable from 3 to 22 months. The recurrence rate for stenting courses lasting for up to 120 d was 71.4% and 21.4% for stenting courses of 121 d or over (P = 0.03). There were 28 patients that were treated with a single ERCP with Kaffes, 21 with removal after 120 d and 7 within 120 d. There was a significant improvement in stricture recurrence when the Kaffes was removed after 120 d when a single ERCP was used for the entire stenting course (71.0% vs 10.0%, P = 0.01).
CONCLUSION Utilising a single Kaffes intraductal fully-covered metal stent for at least 4 months is safe and efficacious for the management of post-transplant anastomotic strictures.
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Affiliation(s)
- Chee Lim
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
| | - Jonathan Ng
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
| | - Babak Sarraf
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
| | - Rhys Vaughan
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
- Melbourne Medical School, The University of Melbourne, Melbourne Parkville, VIC 3052, Australia
| | - Marios Efthymiou
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
- Melbourne Medical School, The University of Melbourne, Melbourne Parkville, VIC 3052, Australia
| | - Leonardo Zorron Cheng Tao Pu
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
- Melbourne Medical School, The University of Melbourne, Melbourne Parkville, VIC 3052, Australia
| | - Sujievvan Chandran
- Department of Gastroenterology and Hepatology, Austin Health, Melbourne Heidelberg, VIC 3084, Australia
- Melbourne Medical School, The University of Melbourne, Melbourne Parkville, VIC 3052, Australia
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Ahmed W, Kyle D, Khanna A, Devlin J, Reffitt D, Zeino Z, Webster G, Phillpotts S, Gordon R, Corbett G, Gelson W, Nayar M, Khan H, Cramp M, Potts J, Fateen W, Miller H, Paranandi B, Huggett M, Everett SM, Hegade VS, O’Kane R, Scott R, McDougall N, Harrison P, Joshi D. Intraductal fully covered self-expanding metal stents in the management of post-liver transplant anastomotic strictures: a UK wide experience. Therap Adv Gastroenterol 2022; 15:17562848221122473. [PMID: 36187366 PMCID: PMC9516418 DOI: 10.1177/17562848221122473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/24/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Fully covered intraductal self-expanding metal stents (IDSEMS) have been well described in the management of post-liver transplant (LT) anastomotic strictures (ASs). Their antimigration waists and intraductal nature make them suited for deployment across the biliary anastomosis. OBJECTIVES We conducted a multicentre study to analyse their use and efficacy in the management of AS. DESIGN This was a retrospective, multicentre observational study across nine tertiary centres in the United Kingdom. METHODS Consecutive patients who underwent endoscopic retrograde cholangiopancreatography with IDSEMS insertion were analysed retrospectively. Recorded variables included patient demographics, procedural characteristics, response to therapy and follow-up data. RESULTS In all, 162 patients (100 males, 62%) underwent 176 episodes of IDSEMS insertion for AS. Aetiology of liver disease in this cohort included hepatocellular carcinoma (n = 35, 22%), followed by alcohol-related liver disease (n = 29, 18%), non-alcoholic steatohepatitis (n = 20, 12%), primary biliary cholangitis (n = 15, 9%), acute liver failure (n = 13, 8%), viral hepatitis (n = 13, 8%) and autoimmune hepatitis (n = 12, 7%). Early AS occurred in 25 (15%) cases, delayed in 32 (20%) cases and late in 95 (59%) cases. Age at transplant was 54 years (range, 12-74), and stent duration was 15 weeks (range, 3 days-78 weeks). In total, 131 (81%) had complete resolution of stricture at endoscopic re-evaluation. Stricture recurrence was observed in 13 (10%) cases, with a median of 19 weeks (range, 4-88 weeks) after stent removal. At removal, there were 21 (12%) adverse events, 5 (3%) episodes of cholangitis and 2 (1%) of pancreatitis. In 11 (6%) cases, the removal wires unravelled, and 3 (2%) stents migrated. All were removed endoscopically. CONCLUSION IDSEMS appears to be safe and highly efficacious in the management of post-LT AS, with low rates of AS recurrence.
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Affiliation(s)
| | - Dave Kyle
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
| | - Amardeep Khanna
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
| | - John Devlin
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
| | - David Reffitt
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
| | - Zeino Zeino
- Southmead Hospital/North Bristol NHS Trust,
Bristol, UK
| | - George Webster
- Hepatopancreatobiliary Unit, University College
Hospital, London, UK
| | - Simon Phillpotts
- Hepatopancreatobiliary Unit, University College
Hospital, London, UK
| | - Robert Gordon
- Cambridge Liver Unit, Addenbrooke’s Hospital,
Cambridge, UK
| | - Gareth Corbett
- Cambridge Liver Unit, Addenbrooke’s Hospital,
Cambridge, UK
| | - William Gelson
- Cambridge Liver Unit, Addenbrooke’s Hospital,
Cambridge, UK
| | - Manu Nayar
- Freeman Hospital, Newcastle upon Tyne,
UK
| | - Haider Khan
- Southwest Liver Unit and Plymouth University
Peninsula Schools of Medicine and Dentistry, Plymouth, UK
| | - Matthew Cramp
- Southwest Liver Unit and Plymouth University
Peninsula Schools of Medicine and Dentistry, Plymouth, UK
| | - Jonathan Potts
- Royal Free Sheila Sherlock Liver Centre, Royal
Free Hospital and UCL Institute of Liver and Digestive Health, London,
UK
| | - Waleed Fateen
- Royal Free Sheila Sherlock Liver Centre, Royal
Free Hospital and UCL Institute of Liver and Digestive Health, London,
UK
| | - Hamish Miller
- Royal Free Sheila Sherlock Liver Centre, Royal
Free Hospital and UCL Institute of Liver and Digestive Health, London,
UK
| | | | | | | | | | | | - Ryan Scott
- Belfast Health and Social Care Trust, Belfast,
UK
| | | | - Phillip Harrison
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
| | - Deepak Joshi
- Institute of Liver Studies, King’s College
Hospital NHS Foundation Trust, London, UK
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Ding S, Wu W, Lu J, Zhu H, Zheng S, Li Q. Migration of fully covered self-expandable metallic stents used to treat anastomotic strictures after orthotopic liver transplantation: A single-center, retrospective analysis. Medicine (Baltimore) 2022; 101:e28685. [PMID: 35089220 PMCID: PMC8797473 DOI: 10.1097/md.0000000000028685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 01/04/2022] [Indexed: 01/05/2023] Open
Abstract
Insertion of a fully covered self-expandable metallic stent (FCEM) through endoscopic retrograde cholangiopancreatography is an effective solution for biliary anastomotic stricture following orthotopic liver transplantation (OLT). However, FCEM migration continues to plague patients. This study aimed to evaluate the FCEM migration rate in our center, and to investigate the factors increasing the migration risk for FCEM.The study enrolled 43 post-OLT patients with confirmed duct-to-duct AS. The effects of age, gender, albumin, alanine aminotransferase, aspartate aminotransferase (AST), γ-glutamyl transpeptidase, alkaline phosphatase, total bilirubin, direct bilirubin, ABO (blood group system consists of four antigens) incompatibility, stricture length, FCEM brand, FCEM length, donor liver and recipient bile duct diameters, size mismatches between the donor and recipient bile ducts >2 mm, diabetes and/or hypertension status, endoscopic sphincterotomy status, the use of plastic stents or nasobiliary drainage prior to FCEM implantation, duration from OLT to FCEM placement, and OLT etiology on FCEM migration were retrospectively analyzed.The FCEM migration rate was 48.8% (21/43) at 6 months. The serum AST level was significantly higher in the migration group than that in the nonmigration group (52.48 vs 29.50 U/L, P < .05). A lower serum AST level was associated with a decreased risk of FCEM migration in post-OLT patients with duct-to-duct anastomotic stricture (hazard ratio = 0.968, 95% confidence interval: 0.940-0.996, P = .028).In this single-center, retrospective cohort study, we showed that an elevated serum AST level was a potential risk factor for FCEM migration.
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Lam R, Muniraj T. Fully covered metal biliary stents: A review of the literature. World J Gastroenterol 2021; 27:6357-6373. [PMID: 34720527 PMCID: PMC8517778 DOI: 10.3748/wjg.v27.i38.6357] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/09/2021] [Accepted: 08/27/2021] [Indexed: 02/06/2023] Open
Abstract
Fully covered self-expandable metal stents (FCSEMS) represent the latest advancement of metal biliary stents used to endoscopically treat a variety of obstructive biliary pathology. A large stent diameter and synthetic covering over the tubular mesh prolong stent patency and reduce risk for tissue hyperplasia and tumor ingrowth. Additionally, FCSEMS can be easily removed. All these features address issues faced by plastic and uncovered metal stents. The purpose of this paper is to comprehensively review the application of FCSEMS in benign and malignant biliary strictures, biliary leak, and post-sphincterotomy bleeding.
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Affiliation(s)
- Robert Lam
- Department of Medicine, Yale University School of Medicine, New Haven, CT 06520, United States
| | - Thiruvengadam Muniraj
- Department of Medicine, Yale University School of Medicine, New Haven, CT 06520, United States
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