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Abboud Y, El Helou MO, Meza J, Samaan JS, Bancila L, Randhawa N, Park KH, Mehdizadeh S, Gaddam S, Lo SK. Esophageal Self-Expandable Metal Stents Can Fracture in the Distal Third When Used for Post-Bariatric Surgery Complications: A Single Center Experience and Review of the Literature with Video. J Clin Med 2024; 13:3419. [PMID: 38929948 PMCID: PMC11204956 DOI: 10.3390/jcm13123419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/29/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Background: Esophageal self-expandable metal stents (SEMS) are an important endoscopic tool. These stents have now been adapted successfully to manage post-bariatric surgery complications such as anastomotic leaks and strictures. In centers of expertise, this has become the primary standard-of-care treatment given its minimally invasive nature, and that it results in early oral feeding, decreased hospitalization, and overall favorable outcomes. Self-expandable metal stents (SEMS) fractures are a rare complication of unknown etiology. We aimed to investigate possible causes of SEMS fractures and highlight a unique endoscopic approach utilized to manage a fractured and impaled SEMS. Methods: This is a retrospective study of consecutive patients who underwent esophageal SEMS placement between 2015-2021 at a tertiary referral center to identify fractured SEMS. Patient demographics, stent characteristics, and possible etiologies of fractured SEMS were identified. A comprehensive literature review was also conducted to evaluate all prior cases of fractured SEMS and to hypothesize fracture theories. Results: There were seven fractured esophageal SEMS, of which six were used to manage post-bariatric surgery complications. Five SEMS were deployed with their distal ends in the gastric antrum and proximal ends in the distal esophagus. All stents fractured within 9 weeks of deployment. Most stents (5/7) were at least 10 cm in length with fractures commonly occurring in the distal third of the stents (6/7). The wires of a fractured SEMS were embedded within the esophagogastric junction in one case, prompting the use of an overtube that was synchronously advanced while steadily extracting the stent. Discussion: We suggest the following four etiologies of SEMS fractures: anatomical, physiological, mechanical, and chemical. Stent curvature at the stomach incisura can lead to strain- and stress-related fatigue due to mechanical bending with exacerbation from respiratory movements. Physiologic factors (gastric body contractions) can result in repetitive squeezing of the stent, adding to metal fatigue. Intrinsic properties (long length and low axial force) may be contributing factors. Lastly, the stomach acidic environment may cause nitinol-induced chemical weakness. Despite the aforementioned theories, SEMS fracture etiology remains unclear. Until more data become available, it may be advisable to remove these stents within 6 weeks.
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Affiliation(s)
- Yazan Abboud
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
- Department of Internal Medicine, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Mohamad Othman El Helou
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
- Department of General Surgery, Yale University, New Haven, CT 06510, USA
| | - Joseph Meza
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Jamil S. Samaan
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Liliana Bancila
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Navkiran Randhawa
- Division of Gastroenterology and Hepatology, Augusta University, Augusta, GA 30912, USA;
| | - Kenneth H. Park
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Shahab Mehdizadeh
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Srinivas Gaddam
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
| | - Simon K. Lo
- Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (M.O.E.H.); (J.M.); (J.S.S.); (L.B.); (K.H.P.); (S.M.); (S.G.)
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Ebert MP, Fischbach W, Hollerbach S, Höppner J, Lorenz D, Stahl M, Stuschke M, Pech O, Vanhoefer U, Porschen R. S3-Leitlinie Diagnostik und Therapie der Plattenepithelkarzinome und Adenokarzinome des Ösophagus. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2024; 62:535-642. [PMID: 38599580 DOI: 10.1055/a-2239-9802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Affiliation(s)
- Matthias P Ebert
- II. Medizinische Klinik, Medizinische Fakultät Mannheim, Universitätsmedizin, Universität Heidelberg, Mannheim
- DKFZ-Hector Krebsinstitut an der Universitätsmedizin Mannheim, Mannheim
- Molecular Medicine Partnership Unit, EMBL, Heidelberg
| | - Wolfgang Fischbach
- Deutsche Gesellschaft zur Bekämpfung der Krankheiten von Magen, Darm und Leber sowie von Störungen des Stoffwechsels und der Ernährung (Gastro-Liga) e. V., Giessen
| | | | - Jens Höppner
- Klinik für Allgemeine Chirurgie, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck
| | - Dietmar Lorenz
- Chirurgische Klinik I, Allgemein-, Viszeral- und Thoraxchirurgie, Klinikum Darmstadt, Darmstadt
| | - Michael Stahl
- Klinik für Internistische Onkologie und onkologische Palliativmedizin, Evang. Huyssensstiftung, Evang. Kliniken Essen-Mitte, Essen
| | - Martin Stuschke
- Klinik und Poliklinik für Strahlentherapie, Universitätsklinikum Essen, Essen
| | - Oliver Pech
- Klinik für Gastroenterologie und Interventionelle Endoskopie, Krankenhaus Barmherzige Brüder, Regensburg
| | - Udo Vanhoefer
- Klinik für Hämatologie und Onkologie, Katholisches Marienkrankenhaus, Hamburg
| | - Rainer Porschen
- Gastroenterologische Praxis am Kreiskrankenhaus Osterholz, Osterholz-Scharmbeck
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Medas R, Ferreira-Silva J, Girotra M, Barakat M, Tabibian JH, Rodrigues-Pinto E. Best Practices in Esophageal, Gastroduodenal, and Colonic Stenting. GE PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2023; 30:19-34. [PMID: 37818397 PMCID: PMC10561327 DOI: 10.1159/000527202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/22/2022] [Indexed: 10/12/2023]
Abstract
Endoscopic stenting is an area of endoscopy that has witnessed noteworthy advancements over the last decade, resulting in evolving clinical practices among gastroenterologists around the world. Indications for endoscopic stenting have progressively expanded, becoming a frequent part of the management algorithm for various benign and malignant conditions of the gastrointestinal tract, from esophagus to rectum. In addition to expanded indications, continuous technological enhancements and development of novel endoscopic stents have resulted in an increased success of these approaches and, in some cases, allowed new applications. This review aimed to summarize best practices in esophageal, gastroduodenal, and colonic stenting.
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Affiliation(s)
- Renato Medas
- Gastroenterology Department, Centro Hospitalar São João, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Joel Ferreira-Silva
- Gastroenterology Department, Centro Hospitalar São João, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Mohit Girotra
- Digestive Health Institute, Swedish Medical Center, Seattle, Washington, USA
| | - Monique Barakat
- Division of Gastroenterology, Stanford University, Stanford, California, USA
| | - James H. Tabibian
- Division of Gastroenterology, Department of Medicine, Olive View-UCLA Medical Center, Sylmar, California, USA
- UCLA Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Eduardo Rodrigues-Pinto
- Gastroenterology Department, Centro Hospitalar São João, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
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Ishihara R. Endoscopic Stenting for Malignant Dysphagia in Patients with Esophageal Cancer. Curr Oncol 2023; 30:5984-5994. [PMID: 37504308 PMCID: PMC10378447 DOI: 10.3390/curroncol30070447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 07/29/2023] Open
Abstract
Malignant dysphagia is a common problem in patients with esophageal cancer. Endoscopic stenting can resolve dysphagia caused by malignant stricture; however, controversy exists regarding the use of esophageal stenting for the treatment of malignant stricture, including whether stenting or radiotherapy is superior, whether stenting before or after radiotherapy is safe, whether stenting before or after chemotherapy is safe, and whether low-radial-force stents are safer than conventional stents. Among treatment options for malignant dysphagia, stenting may have some disadvantages in terms of pain relief and the risk of adverse events compared with radiotherapy and in terms of survival compared with gastrostomy. Additionally, the risk of stent-related adverse events is significantly associated with prior radiotherapy. The risk of perforation is especially high when a radiation dose of >40 Gy is delivered to the esophagus after stenting, whereas perforation is not associated with prior chemotherapy or additional chemotherapy after stenting. Nevertheless, stenting remains an important palliative option, especially for patients with a short life expectancy and a strong desire for oral intake, because stenting can facilitate a more rapid improvement in dysphagia than radiotherapy or gastrostomy. The application of a low-radial-force stent should be considered to reduce the risk of adverse events, especially in patients with prior radiotherapy.
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Affiliation(s)
- Ryu Ishihara
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
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Sasso JGRJ, de Moura DTH, Proença IM, Junior ESDM, Ribeiro IB, Sánchez-Luna SA, Cheng S, Bestetti AM, Kum AST, Bernardo WM, de Moura EGH. Anti-reflux versus conventional self-expanding metal stents in the palliation of esophageal cancer: A systematic review and meta-analysis. Endosc Int Open 2022; 10:E1406-E1416. [PMID: 36262514 PMCID: PMC9576338 DOI: 10.1055/a-1894-0914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/05/2022] [Indexed: 11/09/2022] Open
Abstract
Background and study aims Self-expanding metal stents (SEMS) are an effective palliative endoscopic therapy to reduce dysphagia in esophageal cancer. Gastroesophageal reflux disease (GERD) is a relatively common complaint after non-valved conventional SEMS placement. Therefore, valved self-expanding metal stents (SEMS-V) were designed to reduce the rate of GERD symptoms. We aimed to perform a systematic review and meta-analysis comparing the two stents. Material and methods This was a systematic review and meta-analysis including only randomized clinical trials (RCT) comparing the outcomes between SEMS-V and non-valved self-expanding metal stents (SEMS-NV) following the Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines. The risk of bias was assessed using the Cochrane Risk of Bias 2 tool. Data were analyzed with Review Manager Software. Quality of evidence was evaluated using Grading of Recommendations Assessment, Development, and Evaluation guidelines. Results Ten randomized clinical trials including a total of 467 patients, 234 in the SEMS-V group and 233 in the SEMS-NV group, were included. There were no statistically significant differences regarding GERD qualitative analysis (RD -0.17; 95 % CI -0.67, 0.33; P = 0.5) and quantitative analysis (SMD -0.22; 95 % CI -0.53, 0.08; P = 0.15) technical success (RD -0.03; 95 % CI -0.07, 0.01; P = 0.16), dysphagia improvement (RD -0.07; 95 % CI -0.19, 0.06; P = 0.30), and adverse events (RD 0.07; 95 % CI -0.07, 0.20; P = 0.32). Conclusions Both SEMS-V and SEMS-NV are safe and effective in the palliation of esophageal cancer with similar rates of GERD, dysphagia relief, technical success, adverse events, stent migration, stent obstruction, bleeding, and improvement of the quality of life.
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Affiliation(s)
- João Guilherme Ribeiro Jordão Sasso
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Diogo Turiani Hourneaux de Moura
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Igor Mendonça Proença
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Epifânio Silvino do Monte Junior
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Igor Braga Ribeiro
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Sergio A. Sánchez-Luna
- Basil I. Hirschowitz Endoscopic Center of Excellence, Division of Gastroenterology and Hepatology, Department of Internal Medicine, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama, United States
| | - Spencer Cheng
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Alexandre Moraes Bestetti
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Angelo So Taa Kum
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Wanderley Marques Bernardo
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Eduardo Guimarães Hourneaux de Moura
- Serviço de Endoscopia Gastrointestinal, Departamento de Gastroenterologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
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Kim GH, Shin JH, Zeng CH, Park JH. Recent Updates in Gastrointestinal Stent Placement from the Esophagus to the Colon: A Radiological Perspective. Cardiovasc Intervent Radiol 2022; 45:425-437. [PMID: 35166883 DOI: 10.1007/s00270-022-03067-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/24/2022] [Indexed: 11/02/2022]
Abstract
Fluoroscopic-guided stent placement has become an advantageous treatment option for diverse gastrointestinal disorders. In addition to palliative stent placement in patients with inoperable cancers, stenting has gradually expanded to other conditions, including as a bridge to surgery, as well as in patients' benign lesions and anastomotic strictures or leaks. This narrative review describes the indications, efficacy and safety of stent placement from the esophagus to the colon, including current recommendations, recent updates, and novel stents.
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Affiliation(s)
- Gun Ha Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Olympic-ro 43-gil, Songpa-gu, Seoul, Korea
| | - Ji Hoon Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Olympic-ro 43-gil, Songpa-gu, Seoul, Korea.
| | - Chu Hui Zeng
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Olympic-ro 43-gil, Songpa-gu, Seoul, Korea
| | - Jung Hoon Park
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Olympic-ro 43-gil, Songpa-gu, Seoul, Korea
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Ahmed O, Lee JH, Thompson CC, Faulx A. AGA Clinical Practice Update on the Optimal Management of the Malignant Alimentary Tract Obstruction: Expert Review. Clin Gastroenterol Hepatol 2021; 19:1780-1788. [PMID: 33813072 DOI: 10.1016/j.cgh.2021.03.046] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/22/2021] [Accepted: 03/30/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The purpose of this expert review is to describe the current methodologies available to manage malignant alimentary tract obstructions as well the evidence behind the various methods (including their efficacy and safety), indications, and appropriate timing of interventions. METHODS This is not a formal systematic review but is based on a review of the literature to provide best practice advice statements. No formal rating of the quality of evidence or strength of recommendation is carried out. BEST PRACTICE ADVICE 1: For all patients with alimentary tract obstruction, the decision about specific interventions should be made in a multidisciplinary setting including oncologists, surgeons, and endoscopists and take into account the characteristics of the obstruction, patient's expectations, prognosis, expected subsequent therapies, and functional status. BEST PRACTICE ADVICE 2: For patients who present with esophageal obstruction from esophageal cancer and who are potential candidates for resection or chemoradiation, clinicians should not routinely insert a self-expanding metal stent (SEMS) without multidisciplinary review because of high rates of stent migration, higher morbidity and mortality, and potentially lower R0 (microscopically negative margins) resection rates. BEST PRACTICE ADVICE 3: For patients who present with esophageal obstruction from esophageal cancer who are potential candidates for resection and who have concerns of malnutrition, clinicians may consider the use of enteral feeding tubes (via nasogastric or percutaneous route). Clinicians should be aware of the potential risk of abdominal wall tumor seeding as well as making subsequent gastric conduit formation difficult with percutaneous endoscopic gastrostomy placement. BEST PRACTICE ADVICE 4: For patients who present with esophageal obstruction from esophageal cancer who are not candidates for resection, clinicians should consider either SEMS insertion or brachytherapy as sole therapy or in combination. Clinicians should not consider the use of laser therapy or photodynamic therapy because of the lack of evidence of better outcomes and superior alternatives. BEST PRACTICE ADVICE 5: For patients with malignant esophageal obstruction who are undergoing SEMS placement, clinicians should use a fully covered or partially covered SEMS and not an uncovered SEMS, with consideration of a stent-anchoring/fixation method. BEST PRACTICE ADVICE 6: For patients with gastric outlet obstruction who have a life expectancy greater than 2 months, have good functional status, and who are surgically fit, surgical gastrojejunostomy should be considered. BEST PRACTICE ADVICE 7: For patients with gastric outlet obstruction who are undergoing surgical gastrojejunostomy, a laparoscopic approach is favored over an open approach because of lower blood loss and shorter hospital stay. BEST PRACTICE ADVICE 8: For patients with gastric outlet obstruction who are not candidates for gastrojejunostomy (surgical or endoscopic ultrasound-guided), clinicians should consider the insertion of an enteral stent. BEST PRACTICE ADVICE 9: Enteral stents should not be used in patients with multiple luminal obstructions or severely impaired gastric motility because of the limited benefit in these scenarios. Clinicians can consider placement of a venting gastrostomy in these patients. BEST PRACTICE ADVICE 10: Depending on the experience of the endoscopist, endoscopic ultrasound-guided gastrojejunostomy is an acceptable alternative to surgical gastrojejunostomy and enteral stent placement. Clinicians should be aware that there are currently no dedicated Food and Drug Administration-approved devices for endoscopic ultrasound-guided gastrojejunostomy. BEST PRACTICE ADVICE 11: For patients with malignant colonic obstruction who are candidates for resection, insertion of SEMS is a reasonable choice as a "bridge to surgery" to allow for one-stage, elective resection. BEST PRACTICE ADVICE 12: For patients with malignant colonic obstruction who are not candidates for resection, either SEMS placement or a diverting colostomy are reasonable choices depending on the patient's goals and functional status. BEST PRACTICE ADVICE 13: SEMS is a reasonable option for patients with proximal (or right-sided) malignant obstructions, both as a "bridge to surgery" and in the palliative setting. BEST PRACTICE ADVICE 14: SEMS placement is a reasonable alternative for patients with extracolonic malignancy who are not candidates for surgery, although their placement is more technically challenging, clinical success rates are more variable, and complications (including stent migration) are more frequent.
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Affiliation(s)
- Osman Ahmed
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jeffrey H Lee
- Department of Gastroenterology, M. D. Anderson Cancer Center, Houston, Texas.
| | - Christopher C Thompson
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Boston, Massachusetts
| | - Ashley Faulx
- Department of Medicine, Case Western Reserve University, and University Hospitals, Cleveland Medical Center, Cleveland, Ohio
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Hamada T, Nakai Y, Isayama H, Koike K. Antireflux metal stent for biliary obstruction: Any benefits? Dig Endosc 2021; 33:310-320. [PMID: 32250476 DOI: 10.1111/den.13679] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/10/2020] [Accepted: 03/26/2020] [Indexed: 12/12/2022]
Abstract
Endoscopic retrograde cholangiopancreatography with stent placement has been utilized as standard palliative management of distal malignant biliary obstruction (MBO). Compared to plastic stents, metal stents can provide longer-term relief of symptoms. When a large-bore metal stent is placed across the ampulla, patients are predisposed to the risk of cholangitis or stent dysfunction due to reflux of duodenal contents. To mitigate the risk of adverse events associated with the duodenobiliary reflux, efforts have been directed to development of antireflux metal stents (ARMSs). The antireflux property has been introduced through adding of an antireflux valve to the duodenal stent end. Evidence from clinical studies indicates that ARMSs may not only reduce the risk of ascending cholangitis during follow-up but also prolong stent patency time. However, the results of clinical studies testing ARMSs are inconsistent owing to heterogeneous designs of antireflux valves and stent bodies. Metal stents are increasingly indicated for benign biliary strictures and MBO in the setting of neoadjuvant chemotherapy, and therefore, research is warranted to evaluate ARMSs for those indications. Given that endoscopic ultrasound (EUS)-guided transmural biliary drainage has gained popularity, the optimal timing of placing an ARMS in relation to EUS-guided and percutaneous drainage should be investigated. Development and evaluation of ARMSs require an integrative approach utilizing phantom and animal models, measurements of stent mechanical properties, and in vivo functional study after stent placement. In this review article, we summarize updated evidence on ARMSs for MBO and discuss issues that should be addressed in future studies.
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Affiliation(s)
- Tsuyoshi Hamada
- Departments of, Department of, Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yousuke Nakai
- Departments of, Department of, Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of, Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Isayama
- Department of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Kazuhiko Koike
- Departments of, Department of, Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Abstract
INTRODUCTION Proactive palliative care can effectively relieve symptoms early and effectively as well as improve the quality of life of patients with gastric adenocarcinoma (GAC). AREAS COVERED The review summarizes palliative care for GAC. GAC caused specific symptoms, such as malignant gastric outlet obstruction (GOO), bleeding, weight loss, and/or ascites, therefore, these symptoms must be addressed specifically. EXPERT OPINION Palliative care should start early to control general symptoms, thus may improve the patient's condition to make the patient eligible for anti-cancer treatment. As some stage IV GAC patients can now live longer, palliative interventions become more important. A multimodality interdisciplinary approach is strongly encouraged.
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Antireflux esophageal stents: Do we have a winner? Gastrointest Endosc 2019; 90:75-76. [PMID: 31228983 DOI: 10.1016/j.gie.2019.03.1170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 03/27/2019] [Indexed: 12/11/2022]
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