1
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Borrelli de Andreis F, Boškoski I, Mascagni P, Schepis T, Bianchi A, Schinzari G, Annicchiarico BE, Quero G, Tortora G, Alfieri S, Gasbarrini A, Costamagna G, Spada C, Attili F. Safety and efficacy of endoscopic ultrasound-guided radiofrequency ablation for pancreatic insulinoma: A single-center experience. Pancreatology 2023; 23:543-549. [PMID: 37236853 DOI: 10.1016/j.pan.2023.05.004] [Citation(s) in RCA: 1] [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: 02/14/2023] [Revised: 04/28/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND/OBJECTIVES Insulinomas are rare, functioning pancreatic neuroendocrine neoplasms (pNEN), whose gold standard therapy is surgical resection. Endoscopic ultrasound-guided radiofrequency ablation (EUS-RFA) is a recent technique that has emerged as a minimally invasive therapeutic option for patients with pancreatic lesions not eligible for surgery. In this study, we aimed to describe a series of patients with unresectable pancreatic insulinoma treated with EUS-RFA. METHODS This is a single-center, retrospective study including all consecutive patients with functioning pancreatic insulinoma undergoing EUS-RFA for surgical unfitness or surgery refusal, between March 2017 and September 2021. Technical success (i.e., complete mass ablation), adverse event rate and severity, clinical and radiologic outcomes (i.e., symptom remission with a normal concentration of blood glucose, and the presence of intralesional necrosis), and post-procedural follow-up were assessed. RESULTS A total of 10 patients (mean age: 67.1 ± 10.1years; F:M 7:3) were included. The mean size of insulinoma was 11.9 ± 3.3 mm. Technical success and clinical remission were achieved in 100% of patients. Only one (10%) patient was successfully treated with two RFA sessions. Two procedure-related early adverse events occurred, including two (20%) cases of mild abdominal pain. No major complications were observed. The complete radiologic response within 3 months after EUS-RFA was observed in all patients (100%). After a median follow-up of 19.5 (range12-59) months, symptom remission and persistent euglycemia were assessed in all the patients. CONCLUSIONS Data from this case series suggest that EUS-RFA is a feasible and safe therapeutic approach for pancreatic insulinomas in patients unwilling or unable to undergo surgery with medium-term efficacy.
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Affiliation(s)
| | - Ivo Boškoski
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Centre for Endoscopic Research Therapeutics and Training (CERTT), Università Cattolica Del Sacro Cuore di Roma, Italy
| | - Pietro Mascagni
- Digestive Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Institute of Image-Guided Surgery, IHU-Strasbourg, France
| | - Tommaso Schepis
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Antonio Bianchi
- Endocrinology and Diabetology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Giovanni Schinzari
- Comprehensive Cancer Center, Medical Oncology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | | | - Giuseppe Quero
- Digestive Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Giampaolo Tortora
- Comprehensive Cancer Center, Medical Oncology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Sergio Alfieri
- Digestive Surgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Antonio Gasbarrini
- Internal Medicine and Gastroenterology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Guido Costamagna
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Centre for Endoscopic Research Therapeutics and Training (CERTT), Università Cattolica Del Sacro Cuore di Roma, Italy
| | - Cristiano Spada
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Fabia Attili
- Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
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2
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Marin FS, Hallit R, Coriat R, Chaussade S, Prat F, Barret M. Successful treatment of hemorrhagic radiation esophagitis with radiofrequency ablation. Endoscopy 2022; 54:E830-E831. [PMID: 35561990 PMCID: PMC9735299 DOI: 10.1055/a-1824-5000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Flavius-Stefan Marin
- Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France
| | - Rachel Hallit
- Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France
| | - Romain Coriat
- Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France,Université de Paris, Paris, France
| | - Stanislas Chaussade
- Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France,Université de Paris, Paris, France
| | - Frédéric Prat
- Université de Paris, Paris, France,Department of Digestive Endoscopy, Beaujon Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France
| | - Maximilien Barret
- Department of Gastroenterology and Digestive Oncology, Cochin Hospital, Assistance Publique – Hôpitaux de Paris, Paris, France,Université de Paris, Paris, France
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3
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van Munster SN, Frederiks CN, Nieuwenhuis EA, Alvarez Herrero L, Bogte A, Alkhalaf A, Schenk BE, Schoon EJ, Curvers WL, Koch AD, van de Ven SEM, de Jonge PJF, Tang TJ, Nagengast WB, Peters FTM, Westerhof J, Houben MHMG, Bergman JJGHM, Pouw RE, Weusten BLAM. Incidence and outcomes of poor healing and poor squamous regeneration after radiofrequency ablation therapy for early Barrett's neoplasia. Endoscopy 2022; 54:229-240. [PMID: 34062597 DOI: 10.1055/a-1521-6318] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Endoscopic eradication therapy with radiofrequency ablation (RFA) is effective in most patients with Barrett's esophagus (BE). However, some patients experience poor healing and/or poor squamous regeneration. We evaluated incidence and treatment outcomes of poor healing and poor squamous regeneration. METHODS We included all patients treated with RFA for early BE neoplasia from a nationwide Dutch registry based on a joint treatment protocol. Poor healing (active inflammatory changes or visible ulcerations ≥ 3 months post-RFA), poor squamous regeneration (< 50 % squamous regeneration), and treatment success (complete eradication of BE [CE-BE]) were evaluated. RESULTS 1386 patients (median BE C2M5) underwent RFA with baseline low grade dysplasia (27 %), high grade dysplasia (30 %), or early cancer (43 %). In 134 patients with poor healing (10 %), additional time and acid suppression resulted in complete esophageal healing, and 67/134 (50 %) had normal squamous regeneration with 97 % CE-BE. Overall, 74 patients had poor squamous regeneration (5 %). Compared with patients with normal regeneration, patients with poor squamous regeneration had a higher risk for treatment failure (64 % vs. 2 %, relative risk [RR] 27 [95 % confidence interval [CI] 18-40]) and progression to advanced disease (15 % vs. < 1 %, RR 30 [95 %CI 12-81]). Higher body mass index, longer BE segment, reflux esophagitis, and < 50 % squamous regeneration after baseline endoscopic resection were independently associated with poor squamous regeneration in multivariable logistic regression. CONCLUSIONS In half of the patients with poor healing, additional time and acid suppression led to normal squamous regeneration and excellent treatment outcomes. In patients with poor squamous regeneration, however, the risk for treatment failure and progression to advanced disease was significantly increased.
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Affiliation(s)
- Sanne N van Munster
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, the Netherlands.,Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Charlotte N Frederiks
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, the Netherlands.,Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Esther A Nieuwenhuis
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Lorenza Alvarez Herrero
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, the Netherlands
| | - Auke Bogte
- Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Alaa Alkhalaf
- Department of Gastroenterology and Hepatology, Isala Clinics, Zwolle, the Netherlands
| | - Boudewijn E Schenk
- Department of Gastroenterology and Hepatology, Isala Clinics, Zwolle, the Netherlands
| | - Erik J Schoon
- Department of Gastroenterology and Hepatology, Catharina Hospital, Eindhoven, the Netherlands
| | - Wouter L Curvers
- Department of Gastroenterology and Hepatology, Catharina Hospital, Eindhoven, the Netherlands
| | - Arjun D Koch
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Steffi E M van de Ven
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Pieter J F de Jonge
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Thjon J Tang
- Department of Gastroenterology and Hepatology, IJsselland Hospital, Cappelle a/d IJssel, the Netherlands
| | - Wouter B Nagengast
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen University, Groningen, the Netherlands
| | - Frans T M Peters
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen University, Groningen, the Netherlands
| | - Jessie Westerhof
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen University, Groningen, the Netherlands
| | - Martin H M G Houben
- Department of Gastroenterology and Hepatology, Haga Hospital, Den Haag, the Netherlands
| | - Jacques J G H M Bergman
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Roos E Pouw
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Bas L A M Weusten
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, the Netherlands.,Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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Dhaliwal A, Saghir SM, Mashiana HS, Braseth A, Dhindsa BS, Ramai D, Taunk P, Gomez-Esquivel R, Dam A, Klapman J, Adler DG. Endoscopic cryotherapy: Indications, techniques, and outcomes involving the gastrointestinal tract. World J Gastrointest Endosc 2022; 14:17-28. [PMID: 35116096 PMCID: PMC8788170 DOI: 10.4253/wjge.v14.i1.17] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 10/31/2021] [Accepted: 12/25/2021] [Indexed: 02/06/2023] Open
Abstract
Endoscopic cryotherapy is a technique utilized for the ablation of target tissue within the gastrointestinal tract. A cryotherapy system utilizes the endoscopic application of cryogen such as liquid nitrogen, carbon dioxide or liquid nitrous oxide. This leads to disruption of cell membranes, apoptosis, and thrombosis of local blood vessels within the target tissue. Several trials utilizing cryotherapy for Barrett's esophagus (BE) with variable dysplasia, gastric antral vascular ectasia (GAVE), esophageal carcinoma, radiation proctitis, and metastatic esophageal carcinomas have shown safety and efficacy. More recently, liquid nitrogen cryotherapy (cryodilation) was shown to be safe and effective for the treatment of a benign esophageal stricture which was refractory to dilations, steroid injections, and stenting. Moreover, liquid nitrogen cryotherapy is associated with less post procedure pain as compared to radiofrequency ablation in BE with comparable ablation rates. In patients with GAVE, cryotherapy was found to be less tedious as compared to argon plasma coagulation. Adverse events from cryotherapy most commonly include chest pain, esophageal strictures, and bleeding. Gastric perforations did occur as well, but less often. In summary, endoscopic cryotherapy is a promising and growing field, which was first demonstrated in BE, but the use now spans for several other disease processes. Larger randomized controlled trials are needed before its role can be established for these different diseases.
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Affiliation(s)
- Amaninder Dhaliwal
- Division of Gastroenterology and Advanced Endoscopy, McLeod Regional Medical Center, Florence, SC 29501, United States
| | - Syed M Saghir
- Division of Gastroenterology, Creighton University School of Medicine, Omaha, NE 68124, United States
| | - Harmeet S Mashiana
- Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68198-2000, United States
| | - Annie Braseth
- Division of Gastroenterology, University of Iowa, Iowa City, IA 52242-1009, United States
| | - Banreet S Dhindsa
- Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68198-2000, United States
| | - Daryl Ramai
- Division of Gastroenterology and Hepatology, University of Utah School of Medicine, Salt Lake City, UT 84132, United States
| | - Pushpak Taunk
- Division of Gastroenterology, USF Health, Tampa, FL 33612, United States
| | | | - Aamir Dam
- Division of Gastroenterology and Hepatology, Moffitt Cancer Center, Tampa, FL 33612, United States
| | - Jason Klapman
- Gastrointestinal Tumor Program, Moffitt Cancer Center, Tampa, FL 33612, United States
| | - Douglas G Adler
- Center for Advanced Therapeutic Endoscopy, Porter Adventist Hospital, Center Health, Denver, CO 80210, United States
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5
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Rajabnia M, Hatami B, Ketabi Moghadam P, Mohammadi M, Rafizadeh M, Mangeli F, Fathi M, Jahanian A. Comparison of portal hypertensive gastropathy and gastric antral vascular ectasia: an update. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2022; 15:204-218. [PMID: 36311963 PMCID: PMC9589138 DOI: 10.22037/ghfbb.v15i3.2561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/01/2022] [Indexed: 11/18/2022]
Abstract
Portal hypertensive gastropathy (PHG) and gastric antral vascular ectasia (GAVE) are two distinct entities that are frequently mistaken with each other, because they present with similar manifestations. This issue may cause catastrophic outcomes, as each one of them has a unique pathophysiology, thereby making their management approaches completely different. There are clinical clues that help physicians distinguish these two. Direct vision via upper endoscopy is often mandatory to establish the diagnosis, and sometimes biopsy is required. In this review, we sought to discuss different aspects of both conditions and highlight clinical evidence that may help in identifying and managing the disease appropriately.
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Affiliation(s)
- Mohsen Rajabnia
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Hatami
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pardis Ketabi Moghadam
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahsa Mohammadi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mitra Rafizadeh
- Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Forogh Mangeli
- Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mobin Fathi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Jahanian
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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6
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Development of Radiofrequency Ablation Generator and Balloon-Based Catheter for Microendoluminal Thin-Layer Ablation Therapy Using the Rat Duodenum as a Model of Low-Impedance Tissue. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:9986874. [PMID: 34603652 PMCID: PMC8486529 DOI: 10.1155/2021/9986874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/07/2021] [Accepted: 09/14/2021] [Indexed: 12/03/2022]
Abstract
Radiofrequency ablation (RFA) is a routinely used, safe, and effective method for the tissue destruction. Often, in case of its application in malignant conditions, the extent of tissue destruction is insufficient due to the size of the target lesion, as well as due to the risk of heat-induced damage to the surrounding organs. Nevertheless, there are conditions requiring superficial precise-depth ablation with preservation of deeper layers. These are represented, for example, by mucosal resurfacing in case of Barrett's esophagus or treatment of recurrent mucosal bleeding in case of chronic radiation proctitis. Recently, new indications for intraluminal RFA use emerged, especially in the pancreatobiliary tract. In the case of intraductal use of RFA (e.g., biliary and pancreatic tract), there are currently available rigid and needle tip catheters. An expandable balloon-based RFA catheter suitable for use in such small-diameter tubular organs could be of benefit due to possible increase of contact between the probe and the target tissue; however, to prevent excessive tissue damage, a compatible generator suitable for low-impedance catheter/tissue is essential. This project aimed to develop a radiofrequency ablation generator and bipolar balloon-based catheter optimized for the application in the conditions of low-impedance tissue and (micro)endoluminal environment. Subsequent evaluation of biological effect in vivo was performed using duodenal mucosa in Wistar rat representing conditions of endoluminal radiofrequency ablation of low-impedance tissue. Experiments confirming the safety and feasibility of RFA with our prototype devices were conducted.
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7
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Peng M, Guo X, Yi F, Shao X, Wang L, Wu Y, Wang C, Zhu M, Bian O, Ibrahim M, Chawla S, Qi X. Endoscopic treatment for gastric antral vascular ectasia. Ther Adv Chronic Dis 2021; 12:20406223211039696. [PMID: 34408826 PMCID: PMC8366108 DOI: 10.1177/20406223211039696] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/22/2021] [Indexed: 02/05/2023] Open
Abstract
Gastric antral vascular ectasia (GAVE) is one of the uncommon causes of upper gastrointestinal bleeding. Major treatment of GAVE includes pharmacotherapy, endoscopy, and surgery. The efficacy and safety of pharmacotherapy have not been sufficiently confirmed; and surgery is just considered when conservative treatment is ineffective. By comparison, endoscopy is a common treatment option for GAVE. This paper reviews the currently used endoscopic approaches for GAVE, mainly including argon plasma coagulation (APC), radiofrequency ablation (RFA), and endoscopic band ligation (EBL). It also summarizes their efficacy and procedure-related adverse events. The endoscopic success rate of APC is 40-100%; however, APC needs several treatment sessions, with a high recurrence rate of 10-78.9%. The endoscopic success rates of RFA and EBL are 90-100% and 77.8-100%, respectively; and their recurrence rates are 21.4-33.3% and 8.3-48.1%, respectively. Hyperplastic gastric polyps and sepsis are major adverse events of APC and RFA; and Mallory-Weiss syndrome is occasionally observed after APC. Adverse events of EBL are rare and mild, such as nausea, vomiting, esophageal or abdominal pain, and hyperplastic polyps. APC is often considered as the first-line choice of endoscopic treatment for GAVE. RFA and EBL have been increasingly used as alternatives in patients with refractory GAVE. A high recurrence of GAVE after endoscopic treatment should be fully recognized and cautiously managed by follow-up endoscopy. In future, a head-to-head comparison of different endoscopic approaches for GAVE is warranted.
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Affiliation(s)
- Mengyuan Peng
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
- Postgraduate College, Jinzhou Medical University, Jinzhou, P.R. China
| | - Xiaozhong Guo
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Fangfang Yi
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Xiaodong Shao
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Le Wang
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Yanyan Wu
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Chunmei Wang
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Menghua Zhu
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Ou Bian
- Department of No.1 Cadre Ward, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang, P.R. China
| | - Mostafa Ibrahim
- Department of Gastroenterology and Hepatology, Theodor Bilharz Research Institute, Cairo, Egypt
| | - Saurabh Chawla
- Department of Medicine, Division of Digestive Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Xingshun Qi
- Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), No. 83 Wenhua Road, Shenyang, Liaoning Province 110840, China
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8
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Aihara H, Kushnir V, Anand GS, Cassani L, Chahal P, Dacha S, Duloy A, Ghassemi S, Huang C, Kowalski TE, Qayed E, Sheth SG, Simons-Linares CR, Taylor JR, Umar SB, Vela SAF, Walsh CM, Williams RL, Wagh MS. Core curriculum for endoscopic ablative techniques. Gastrointest Endosc 2021; 93:305-308. [PMID: 32854937 DOI: 10.1016/j.gie.2020.06.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/19/2020] [Indexed: 02/07/2023]
Affiliation(s)
| | - Hiroyuki Aihara
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Vladimir Kushnir
- Division of Gastroenterology, John T. Milliken Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Gobind S Anand
- Division of Gastroenterology, University of California San Diego, San Diego, California, USA
| | - Lisa Cassani
- Department of Medicine, Division of Digestive Diseases, Emory University School of Medicine, and Atlanta VA Medical Center, Atlanta, Georgia, USA
| | - Prabhleen Chahal
- Digestive Disease and Surgery Institute, Cleveland Clinic, OH, USA
| | - Sunil Dacha
- Division of Gastroenterology, Department of Internal Medicine, Houston Methodist Hospital and Texas A&M University, Houston, Texas, USA
| | - Anna Duloy
- Division of Gastroenterology, University of Colorado-Denver, Aurora, Colorado, USA
| | - Sahar Ghassemi
- Division of Gastroenterology and Hepatology, Duke University, Durham, North Carolina
| | - Christopher Huang
- Section of Gastroenterology, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Thomas E Kowalski
- Division of Gastroenterology and Hepatology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Emad Qayed
- Department of Medicine, Division of Digestive Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Sunil G Sheth
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Jason R Taylor
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Saint Louis University, St Louis, Missouri, USA
| | - Sarah B Umar
- Division of Gastroenterology Mayo Clinic Arizona, Scottsdale, Arizona, USA
| | - Stacie A F Vela
- Gastroenterology Section, Phoenix VA Health Care System, University of Arizona-Phoenix
| | - Catharine M Walsh
- Division of Gastroenterology, Hepatology and Nutrition and the Research and Learning Institutes, Hospital for Sick Children, Department of Paediatrics and the Wilson Centre, University of Toronto, Toronto, Canada
| | - Renee L Williams
- Department of Medicine, Division of Gastroenterology, NYU Grossman School of Medicine, New York, New York, USA
| | - Mihir S Wagh
- Division of Gastroenterology, University of Colorado-Denver, Aurora, Colorado, USA
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9
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Song Y, Feng Y, Sun LH, Zhang BJ, Yao HJ, Qiao JG, Zhang SF, Zhang P, Liu B. Role of argon plasma coagulation in treatment of esophageal varices. World J Clin Cases 2021; 9:521-527. [PMID: 33553390 PMCID: PMC7829739 DOI: 10.12998/wjcc.v9.i3.521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/02/2020] [Accepted: 11/29/2020] [Indexed: 02/06/2023] Open
Abstract
With the development of endoscopic therapy, argon plasma coagulation (APC) has been widely used by endoscopists. It has many advantages, such as simple to operate, low cost, and minimal invasiveness. Because of its capability of lesion ablation and hemostasis, APC has several indications in the gastrointestinal tract. One of them is esophageal varices. The aim of this review is to summarize the research on APC in this field to provide a reference for clinical practice.
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Affiliation(s)
- Ying Song
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Yuan Feng
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Li-Hui Sun
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Bo-Jiang Zhang
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Hong-Juan Yao
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Jing-Gui Qiao
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Shu-Fen Zhang
- Department of Gastroenterology, Xi’an Gaoxin Hospital, Xi'an 710032, Shaanxi Province, China
| | - Ping Zhang
- Department of Clinical Medical Affair, Erbe China Ltd., Shanghai 200336, China
| | - Bin Liu
- Department of Clinical Medical Affair, Erbe China Ltd., Shanghai 200336, China
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Glaser SM, Mohindra P, Mahantshetty U, Beriwal S. Complications of intracavitary brachytherapy for gynecologic cancers and their management: A comprehensive review. Brachytherapy 2021; 20:984-994. [PMID: 33478905 DOI: 10.1016/j.brachy.2020.11.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
Intracavitary gynecologic brachytherapy in the form of tandem-based brachytherapy and vaginal cylinder-based brachytherapy represents a fundamental component of the treatment of women with cervical or uterine cancer due to the ability to deliver a therapeutic dose of radiation with sharp dose falloff. This results in highly effective treatment in terms of oncologic outcomes with an overall favorable toxicity profile. Still, complications and side effects of brachytherapy do exist. While advances in brachytherapy techniques have led to a significant decrease in the rates of toxicity, a thorough understanding of the potential complications is crucial to ensuring optimal outcomes for women with gynecologic cancer undergoing brachytherapy. Use of equivalent dose at 2 Gy per fraction (EQD2) models has allowed incorporation of external beam radiotherapy dose to the brachytherapy dose leading to development of consolidated dose constraints for organs-at-risk in the modern era. This manuscript offers a comprehensive review of potential complications associated with intracavitary brachytherapy for gynecologic cancer including predictive factors, mitigation tactics, and management strategies.
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Affiliation(s)
- Scott M Glaser
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA.
| | - Pranshu Mohindra
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD
| | | | - Sushil Beriwal
- Department of Radiation Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA
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11
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Castela J, Mão de Ferro S, Ferreira S, Dias Pereira A. Management of Severe Radiation Proctitis with Radiofrequency Ablation. GE PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2019; 26:128-130. [PMID: 30976619 PMCID: PMC6454389 DOI: 10.1159/000487447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 02/01/2018] [Indexed: 06/09/2023]
Affiliation(s)
- Joana Castela
- *Dr. Joana Raquel Oliveira Castela, Department of Gastroenterology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Rua Prof. Lima Basto, PT–1099-023 Lisbon (Portugal), E-Mail
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12
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Solomon SS, Kothari S, Smallfield GB, Inamdar S, Stein P, Rodriguez VA, Sima AP, Bittner K, Zfass AM, Kaul V, Trindade AJ. Liquid Nitrogen Spray Cryotherapy is Associated With Less Postprocedural Pain Than Radiofrequency Ablation in Barrett's Esophagus: A Multicenter Prospective Study. J Clin Gastroenterol 2019; 53:e84-e90. [PMID: 29351156 DOI: 10.1097/mcg.0000000000000999] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
GOALS AND BACKGROUND Two common endoscopic therapies for eradication of dysplastic Barrett's esophagus are radiofrequency ablation (RFA) and liquid nitrogen spray cryotherapy (LNC). There is no data comparing postprocedural pain. This study aimed to compare the incidence of postprocedural pain between the 2 ablation modalities. METHODS This is a multicenter prospective study in which pain intensity scores and the presence of dysphagia were assessed immediately before and after treatment, 48 hours posttreatment and at 3 weeks posttreatment using validated instruments. RESULTS Of 94 patients, 35 underwent LNC and 59 underwent RFA [36 with focal radiofrequency ablation (RFA-F) and 23 with circumferential radiofrequency ablation (RFA-C)]. Immediately posttreatment, patients in the LNC group reported an average Numeric Pain Scale score that was lower than in the RFA groups [LNC 0.41 vs. RFA-F 1.18 (P=0.026), LNC 0.41 vs. RFA-C 1.38 (P=0.010)]. These differences persisted at 48 hours posttreatment [LNC 0.76 vs. RFA-F 1.77 (P=0.013), LNC 0.76 vs. RFA-C 1.73 (P=0.018)]. The odds of pain after RFA were at least 5 times greater than after LNC [immediately posttreatment odds ratio, 5.26 (95% confidence interval, 1.85-14.29) and 48 h posttreatment odds ratio, 5.56 (95% confidence interval, 2.27-14.29)]. There was no difference in dysphagia after treatment in either group, at any time point (P=0.429). CONCLUSION LNC was associated with less postprocedural pain when compared with RFA. These results help inform patients and physicians about the expected symptoms after ablative endotherapy.
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Affiliation(s)
- Sanjeev S Solomon
- Division of Gastroenterology, Virginia Commonwealth University Medical Center
| | - Shivangi Kothari
- Division of Gastroenterology, University of Rochester Medical Center, Rochester
| | - George B Smallfield
- Division of Gastroenterology, Virginia Commonwealth University Medical Center
| | - Sumant Inamdar
- Division of Gastroenterology, Long Island Jewish Medical Center, Hofstra Northwell School of Medicine, Northwell Health System, New Hyde Park, NY
| | - Peter Stein
- Division of Gastroenterology, Long Island Jewish Medical Center, Hofstra Northwell School of Medicine, Northwell Health System, New Hyde Park, NY
| | | | - Adam P Sima
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA
| | - Krystle Bittner
- Division of Gastroenterology, University of Rochester Medical Center, Rochester
| | - Alvin M Zfass
- Division of Gastroenterology, Virginia Commonwealth University Medical Center
| | - Vivek Kaul
- Division of Gastroenterology, University of Rochester Medical Center, Rochester
| | - Arvind J Trindade
- Division of Gastroenterology, Long Island Jewish Medical Center, Hofstra Northwell School of Medicine, Northwell Health System, New Hyde Park, NY
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13
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Matin T, Naseemuddin M, Shoreibah M, Li P, Kyanam Kabir Baig K, Wilcox CM, Peter S. Case series on multimodal endoscopic therapy for gastric antral vascular ectasia, a tertiary center experience. World J Gastrointest Endosc 2018; 10:30-36. [PMID: 29375739 PMCID: PMC5769001 DOI: 10.4253/wjge.v10.i1.30] [Citation(s) in RCA: 5] [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: 10/27/2017] [Revised: 12/13/2017] [Accepted: 12/29/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To study and describe patients who underwent treatment for gastric antral vascular ectasia (GAVE) with different endoscopic treatment modalities.
METHODS We reviewed patients with GAVE who underwent treatment at University of Alabama at Birmingham between March 1, 2012 and December 31, 2016. Included patients had an endoscopic diagnosis of GAVE with associated upper gastrointestinal bleeding or iron deficiency anemia.
RESULTS Seven out of 15 patients had classic watermelon description for GAVE, 1/15 with diffuse/honeycomb pattern and 6/15 with nodular GAVE per EGD description. Seven out of 15 patients required multimodal treatment. Four out of six of patients with endoscopically nodular GAVE required multimodal therapy. Overall, mean pre- and post-treatment hemoglobin (Hb) values were 8.2 ± 0.8 g/dL and 9.7 ± 1.6 g/dL, respectively (P ≤ 0.05). Mean number of packed red blood cells transfusions before and after treatment was 3.8 ± 4.3 and 1.2 ± 1.7 (P ≤ 0.05), respectively.
CONCLUSION Patients with nodular variant GAVE required multimodal approach more frequently than non-nodular variants. Patients responded well to multimodal therapy and saw decrease in transfusion rates and increase in Hb concentrations. Our findings suggest a multimodal approach may be beneficial in nodular variant GAVE.
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Affiliation(s)
- Tasnia Matin
- Internal Medicine, UAB Hospital, Birmingham, AL 35233, United States
- Division of Gastroenterology, University of Alabama School of Medicine, Birmingham, AL 35294, United States
| | | | - Mohamed Shoreibah
- Division of Gastroenterology, University of Alabama at Birmingham, Birmingham, AL 35233, United States
| | - Peng Li
- School of Public Health, University of Alabama at Birmingham, Birmingham, AL 25294, United States
| | - Kondal Kyanam Kabir Baig
- Division of Gastroenterology, University of Alabama at Birmingham, Birmingham, AL 35233, United States
| | - Charles Mel Wilcox
- Division of Gastroenterology, University of Alabama at Birmingham, Birmingham, AL 35233, United States
| | - Shajan Peter
- Division of Gastroenterology, University of Alabama at Birmingham, Birmingham, AL 35233, United States
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Hsu WH, Wang YK, Hsieh MS, Kuo FC, Wu MC, Shih HY, Wu IC, Yu FJ, Hu HM, Su YC, Wu DC. Insights into the management of gastric antral vascular ectasia (watermelon stomach). Therap Adv Gastroenterol 2018; 11:1756283X17747471. [PMID: 29399041 PMCID: PMC5788127 DOI: 10.1177/1756283x17747471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/30/2017] [Indexed: 02/04/2023] Open
Abstract
Gastric antral vascular ectasia (GAVE) is an uncommon but important cause of chronic gastrointestinal bleeding. It is often associated with systemic diseases such as autoimmune diseases, liver cirrhosis, chronic renal insufficiency and cardiovascular disease. The etiology of GAVE has not been fully explored and remains controversial. Diagnosis is mainly based on endoscopic presentation with flat or raised erythematous stripes radiating from the pylorus to the antrum and resembles a watermelon. Clinical presentation may range from iron-deficiency anemia secondary to occult blood loss, melena to hematemesis. In past decades, many therapeutic modalities including medical, endoscopic and surgical intervention have been introduced for GAVE treatment with variable efficacy. Herein, we review the efficacy and safety of these treatment options for GAVE.
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Affiliation(s)
- Wen-Hung Hsu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yao-Kuang Wang
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Internal Medicine, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan
| | - Meng-Shu Hsieh
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Fu-Chen Kuo
- Shool of Medicine, College of Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Meng-Chieh Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Hsiang-Yao Shih
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - I-Chen Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Jung Yu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Huang-Ming Hu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Chung Su
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, TaiwanDepartment of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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15
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Navaneethan U, Thosani N, Goodman A, Manfredi M, Pannala R, Parsi MA, Smith ZL, Sullivan SA, Banerjee S, Maple JT. Radiofrequency ablation devices. VIDEOGIE : AN OFFICIAL VIDEO JOURNAL OF THE AMERICAN SOCIETY FOR GASTROINTESTINAL ENDOSCOPY 2017; 2:252-259. [PMID: 29905337 PMCID: PMC5992954 DOI: 10.1016/j.vgie.2017.06.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Key Words
- APC, argon plasma coagulation
- ASGE, American Society for Gastrointestinal Endoscopy
- BE, Barrett's esophagus
- CCA, cholangiocarcinoma
- CE-D, complete eradication of dysplasia
- CE-IM, complete eradication of intestinal metaplasia
- CI, confidence interval
- CPT, current procedural technology
- ESD, endoscopic submucosal dissection
- GAVE, gastric antral vascular ectasia
- HGD, high-grade dyplasia
- IMC, intramucosal carcinoma
- LGD, low-grade dysplasia
- NET, neuroendocrine tumors
- PDT, photodynamic therapy
- RF, radiofrequency
- RFA, radiofrequency ablation
- RP, radiation proctopathy
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Trindade AJ, Inamdar S, Kothari S, Berkowitz J, McKinley M, Kaul V. Feasibility of liquid nitrogen cryotherapy after failed radiofrequency ablation for Barrett's esophagus. Dig Endosc 2017; 29:680-685. [PMID: 28303613 DOI: 10.1111/den.12869] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/13/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIM Radiofrequency ablation (RFA) for dysplastic Barrett's esophagus (BE) is highly effective. RFA failures are infrequent but can be a challenging cohort to manage. There are limited data on the feasibility of liquid nitrogen cryospray ablation for complete eradication of dysplasia (CE-D) and/or intestinal metaplasia (CE-IM) after RFA has failed to achieve CE-IM in patients with dysplastic BE. METHODS This is a retrospective review from two medical centers of prospectively maintained databases looking at patients that underwent liquid nitrogen cryospray ablation for refractory intestinal metaplasia post failed RFA. RESULTS Eighteen patients were identified that met inclusion criteria. Eleven patients had persistent dysplasia and IM following RFA and seven had persistent non-dysplastic IM. More than 80% of patients were male with long-segment BE (median length 8 cm). Seventy two percent of patients with dysplasia achieved CE-D after cryotherapy. Fifty percent (9/18) of all RFA failures achieved CE-IM with cryotherapy. In comparison, RFA has a CE-IM of 78% in a less challenging treatment naïve cohort from a large-scale meta-analysis of 3802 patients. No adverse events occurred in our cohort. CONCLUSION Cryospray ablation is feasible and safe for achieving CE-D and CE-IM after RFA failure. The CE-D rates are high with cryotherapy in this population. CE-IM with cryotherapy is acceptable in this difficult-to-treat cohort when compared to CE-IM rates with RFA in dysplastic BE treatment naïve patients (50% vs 78%).
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Affiliation(s)
- Arvind J Trindade
- Division of Gastroenterology, Department of Medicine, Hofstra Northwell School of Medicine, Northwell Health System, Long Island Jewish Medical Center, New Hyde Park, USA
| | - Sumant Inamdar
- Division of Gastroenterology, Department of Medicine, Hofstra Northwell School of Medicine, Northwell Health System, Long Island Jewish Medical Center, New Hyde Park, USA
| | - Shivangi Kothari
- Strong Memorial Hospital, University of Rochester Medical Center, Rochester, USA
| | - Joshua Berkowitz
- Division of Gastroenterology, Department of Medicine, Hofstra Northwell School of Medicine, Northwell Health System, Long Island Jewish Medical Center, New Hyde Park, USA
| | - Matthew McKinley
- Division of Gastroenterology, Department of Medicine, Hofstra Northwell School of Medicine, Northwell Health System, Long Island Jewish Medical Center, New Hyde Park, USA
| | - Vivek Kaul
- Strong Memorial Hospital, University of Rochester Medical Center, Rochester, USA
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Knoop RF, Richter-Schrag HJ, Heeg S, Hoeppner J, Fischer A. Radiofrequency ablation is a treatment option for early stages of verrucous esophageal carcinoma. VideoGIE 2016; 1:78-81. [PMID: 29905227 PMCID: PMC5990324 DOI: 10.1016/j.vgie.2016.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Richard F Knoop
- Department of Medicine II, Interdisciplinary Gastrointestinal Endoscopy, Faculty of Medicine, University Hospital Freiburg, University of Freiburg, Freiburg, Germany
| | - Hans-Juergen Richter-Schrag
- Department of Medicine II, Interdisciplinary Gastrointestinal Endoscopy, Faculty of Medicine, University Hospital Freiburg, University of Freiburg, Freiburg, Germany
| | - Steffen Heeg
- Department of Medicine II, Interdisciplinary Gastrointestinal Endoscopy, Faculty of Medicine, University Hospital Freiburg, University of Freiburg, Freiburg, Germany
| | - Jens Hoeppner
- Department of General and Visceral Surgery, Faculty of Medicine, University Hospital Freiburg, University of Freiburg, Freiburg, Germany
| | - Andreas Fischer
- Department of Medicine II, Interdisciplinary Gastrointestinal Endoscopy, Faculty of Medicine, University Hospital Freiburg, University of Freiburg, Freiburg, Germany
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