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Ishikawa Y, Goto O, Nakagome S, Habu T, Kirita K, Koizumi E, Higuchi K, Noda H, Onda T, Omori J, Akimoto N, Iwakiri K. Spray coagulation reduces the use of hemostatic forceps for intraoperative bleeding in gastric endoscopic submucosal dissection. JGH Open 2024; 8:e70002. [PMID: 39036415 PMCID: PMC11258569 DOI: 10.1002/jgh3.70002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 07/03/2024] [Indexed: 07/23/2024]
Abstract
Aims During intraoperative bleeding in endoscopic submucosal dissection (ESD), switching to spray coagulation may be beneficial compared with the continuous use of swift coagulation and can reduce the need for hemostatic forceps. We retrospectively assessed the effectiveness of spray modes on intraoperative bleeding during gastric ESD. Methods and Results A total of 316 bleeding events (156 in the Swift group and 160 in the Spray group) were consecutively recorded. In the Swift group, hemostasis was performed using the swift mode with a retracted tip of the needle-type knife, followed by the hemostatic forceps. In the Spray group, bleeding was treated in a stepwise manner: the swift mode, the spray mode, and the hemostatic forceps. All bleeding events were assigned to one of two groups by an endoscopist who retrospectively reviewed the videos. We compared the use of hemostatic forceps, the total hemostatic time, and the cumulative hemostasis rate between the two groups.The use of hemostatic forceps was significantly lower in the Spray group than in the Swift group (32.7% vs. 13.8%, P < 0.001). There was no significant difference in the total hemostatic time (Swift group, 20 s.; Spray group, 16 s.; P = 0.42), whereas the cumulative hemostasis rate with the knife was significantly higher in the Spray group (P = 0.007). Conclusion The results suggested that spray coagulation from the tip of the needle-type knife could reduce the use of hemostatic forceps. In gastric ESD, spray coagulation may facilitate the hemostasis of intraoperative bleeding.
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Affiliation(s)
- Yumiko Ishikawa
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Osamu Goto
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
- Endoscopy CenterNippon Medical School HospitalTokyoJapan
| | - Shun Nakagome
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Tsugumi Habu
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Kumiko Kirita
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Eriko Koizumi
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Kazutoshi Higuchi
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Hiroto Noda
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Takeshi Onda
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Jun Omori
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Naohiko Akimoto
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
| | - Katsuhiko Iwakiri
- Department of GastroenterologyNippon Medical School, Graduate School of MedicineTokyoJapan
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Jena A, Jain S, Sundaram S, Singh AK, Chandnani S, Rathi P. Electrosurgical unit in GI endoscopy: the proper settings for practice. Expert Rev Gastroenterol Hepatol 2023; 17:825-835. [PMID: 37497836 DOI: 10.1080/17474124.2023.2242243] [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: 02/12/2023] [Revised: 06/14/2023] [Accepted: 07/26/2023] [Indexed: 07/28/2023]
Abstract
INTRODUCTION Electrosurgical unit (ESU) is integral to the endoscopy unit. The proper knowledge of the Mode with setting is essential for good therapeutic outcomes and the safety of the patients. AREAS COVERED ESU generates high-frequency electric current, which could perform cutting and coagulation for various therapeutic interventions. We review the proper settings for common endoscopic interventions like hemostasis, polypectomy, sphincterotomy, and advanced procedures like endoscopic ultrasound-guided cysto-gastrostomy, bile duct drainage, and endoscopic Ampullectomy. We review the various waveforms of ESU in practice in endoscopy, including special conditions like patients with pacemakers. EXPERT OPINION Knowledge of the waveforms' duty cycle and crest factor is necessary. A high-duty cycle and lower crest factor lead to a good cutting effect on the tissue. Endocut is the most commonly used Mode in ESU in endoscopic practices like sphincterotomy and polypectomy. Endocut I mode (effect 1-2, duration 3, interval 3) is used for endoscopic sphincterotomy, while Forced Coag mode (Effect 2, 60 W) controls post-sphincterotomy bleeding. Endocut Q mode (Effect 2-3, duration 1, interval 3) is used for cutting the polyp, while Forced Coag mode (Effect 2, 60 W) is used before cutting for pre-coagulation of the stalk.
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Affiliation(s)
- Anuraag Jena
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Shubham Jain
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Sridhar Sundaram
- Department of Digestive Diseases and Clinical Nutrition, Tata Memorial Hospital, Mumbai, India
| | - Anupam Kumar Singh
- Department of Gastroenterology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sanjay Chandnani
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Pravin Rathi
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
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3
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Libânio D, Pimentel-Nunes P, Bastiaansen B, Bisschops R, Bourke MJ, Deprez PH, Esposito G, Lemmers A, Leclercq P, Maselli R, Messmann H, Pech O, Pioche M, Vieth M, Weusten BLAM, Fuccio L, Bhandari P, Dinis-Ribeiro M. Endoscopic submucosal dissection techniques and technology: European Society of Gastrointestinal Endoscopy (ESGE) Technical Review. Endoscopy 2023; 55:361-389. [PMID: 36882090 DOI: 10.1055/a-2031-0874] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
ESGE suggests conventional endoscopic submucosal dissection (ESD; marking and mucosal incision followed by circumferential incision and stepwise submucosal dissection) for most esophageal and gastric lesions. ESGE suggests tunneling ESD for esophageal lesions involving more than two-thirds of the esophageal circumference. ESGE recommends the pocket-creation method for colorectal ESD, at least if traction devices are not used. The use of dedicated ESD knives with size adequate to the location/thickness of the gastrointestinal wall is recommended. It is suggested that isotonic saline or viscous solutions can be used for submucosal injection. ESGE recommends traction methods in esophageal and colorectal ESD and in selected gastric lesions. After gastric ESD, coagulation of visible vessels is recommended, and post-procedural high dose proton pump inhibitor (PPI) (or vonoprazan). ESGE recommends against routine closure of the ESD defect, except in duodenal ESD. ESGE recommends corticosteroids after resection of > 50 % of the esophageal circumference. The use of carbon dioxide when performing ESD is recommended. ESGE recommends against the performance of second-look endoscopy after ESD. ESGE recommends endoscopy/colonoscopy in the case of significant bleeding (hemodynamic instability, drop in hemoglobin > 2 g/dL, severe ongoing bleeding) to perform endoscopic hemostasis with thermal methods or clipping; hemostatic powders represent rescue therapies. ESGE recommends closure of immediate perforations with clips (through-the-scope or cap-mounted, depending on the size and shape of the perforation), as soon as possible but ideally after securing a good plane for further dissection.
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Affiliation(s)
- Diogo Libânio
- Department of Gastroenterology, Portuguese Oncology Institute - Porto, Portugal.,MEDCIDS, Faculty of Medicine, University of Porto, Porto, Portugal.,Porto Comprehensive Cancer Center (Porto.CCC) & RISE@CI-IPOP (Health Research Network), Porto, Portugal
| | - Pedro Pimentel-Nunes
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, FMUP, Porto, Portugal.,Gastroenterology, Unilabs, Portugal
| | - Barbara Bastiaansen
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Raf Bisschops
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, TARGID, Leuven, Belgium
| | - Michael J Bourke
- Department of Gastroenterology, Westmead Hospital, Sydney, Australia.,Western Clinical School, University of Sydney, Sydney, Australia
| | - Pierre H Deprez
- Department of Hepatogastroenterology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Gianluca Esposito
- Department of Surgical and Medical Sciences and Translational Medicine, Sant'Andrea Hospital, Sapienza University of Rome, Italy
| | - Arnaud Lemmers
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Erasme Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Philippe Leclercq
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, TARGID, Leuven, Belgium
| | - Roberta Maselli
- Department of Biomedical Sciences, Humanitas University, Milan, Italy. Endoscopy Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Italy
| | - Helmut Messmann
- Department of Gastroenterology, University Hospital Augsburg, Augsburg, Germany
| | - Oliver Pech
- Department of Gastroenterology and Interventional Endoscopy, Krankenhaus Barmherzige Brueder Regensburg, Germany
| | - Mathieu Pioche
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Michael Vieth
- Institute of Pathology, Friedrich-Alexander University Erlangen-Nuremberg, Klinikum Bayreuth, Bayreuth, Germany
| | - Bas L A M Weusten
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands.,University Medical Center Utrecht, Utrecht University, The Netherlands
| | - Lorenzo Fuccio
- Department of Medical and Surgical Sciences, Gastroenterology Unit, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Pradeep Bhandari
- Department of Gastroenterology, Queen Alexandra Hospital, Portsmouth, UK
| | - Mario Dinis-Ribeiro
- Department of Gastroenterology, Portuguese Oncology Institute - Porto, Portugal.,MEDCIDS, Faculty of Medicine, University of Porto, Porto, Portugal.,Porto Comprehensive Cancer Center (Porto.CCC) & RISE@CI-IPOP (Health Research Network), Porto, Portugal
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4
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Bai Y, Yang F, Liu C, Li DF, Wang S, Lin R, Ding Z, Meng WB, Li ZS, Linghu EQ. Expert consensus on the clinical application of high-frequency electrosurgery in digestive endoscopy (2020, Shanghai). J Dig Dis 2022; 23:2-12. [PMID: 34953023 DOI: 10.1111/1751-2980.13074] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/20/2021] [Indexed: 12/11/2022]
Abstract
High-frequency electrosurgery has been widely applied in digestive endoscopy with constantly expanding indications. However, high-frequency electrosurgery may cause possible complications such as hemorrhage or perforation during or after the procedure, of which endoscopists must be cautious. Digestive endoscopists must have a firm grasp of the principles of high-frequency electrosurgery as well as its safety issues so as to improve the safety of its clinical application. To this end, experts in gastroenterology and hepatology, digestive endoscopy, surgery, nursing and other related fields were invited to draft a consensus on the clinical application of high-frequency electrosurgery in digestive endoscopy based on relevant domestic and international literatures and their experiences.
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Affiliation(s)
- Yu Bai
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Fan Yang
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Cui Liu
- Digestive Endoscopy Center, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - De Feng Li
- Department of Gastroenterology, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Shenzhen, Guangdong Province, China
| | - Shi Wang
- Endoscopy Center, Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou, Zhejiang Province, China
| | - Rong Lin
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zhen Ding
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Wen Bo Meng
- Department of General Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu Province, China
| | - Zhao Shen Li
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - En Qiang Linghu
- Department of Gastroenterology and Hepatology, The First Medical Center of Chinese PLA General Hospital, Beijing, China
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Yoshida A, Kawaguchi K, Yashima K, Iwasaki K, Isomoto H. Endoscopic submucosal dissection for a laterally spreading tumor involving the colon diverticulum using a knife with water supply function. VideoGIE 2020; 5:207-209. [PMID: 32426572 PMCID: PMC7221287 DOI: 10.1016/j.vgie.2020.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Akira Yoshida
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Koichiro Kawaguchi
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Kazuo Yashima
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Keisuke Iwasaki
- Department of Pathology, Sasebo City General Hospital, Nagasaki, Japan
| | - Hajime Isomoto
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Japan
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6
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Horikawa Y, Fushimi S, Sato S. Hemorrhage control during gastric endoscopic submucosal dissection: Techniques using uncovered knives. JGH Open 2020; 4:4-10. [PMID: 32055690 PMCID: PMC7008155 DOI: 10.1002/jgh3.12202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 04/03/2019] [Accepted: 05/04/2019] [Indexed: 12/19/2022]
Abstract
Since the last decade, endoscopic submucosal dissection (ESD) has been used as the standard treatment for superficial gastrointestinal neoplasms. Trainees learning ESD frequently encounter difficulties such as vascularity, peristalsis, and fibrosis during the procedure. Because individual vascularity differs, it generally cannot be consistently avoided. Given that massive hemorrhages can prolong the procedure time and diminish treatment efficacy and that insufficient vessel handling may also increase postoperative bleeding, hemorrhage control during ESD becomes important to ensure procedure safety. This article discusses methods for controlling hemorrhage during gastric ESD. Endoscopists should have a basic understanding of the vascular architecture and the high‐density areas in blood vessels, which are susceptible to intraoperative hemorrhage. Efficient preventative coagulation should be performed in addition to mastering the techniques for hemorrhage control using hemostatic forceps. Techniques useful for preventing intraoperative hemorrhage at every step (e.g. submucosal injection, mucosal incision, and dissection) should be learned. Gaining procedural competence and learning hemorrhage control techniques not only during ESD but also in daily work would help provide safe and effective treatment.
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Affiliation(s)
- Yohei Horikawa
- Department of GastroenterologyHiraka General Hospital Yokote Japan
| | - Saki Fushimi
- Department of GastroenterologyHiraka General Hospital Yokote Japan
| | - Sayaka Sato
- Department of GastroenterologyHiraka General Hospital Yokote Japan
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7
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Marín-Gabriel JC, Romito R, Guarner-Argente C, Santiago-García J, Rodríguez-Sánchez J, Toyonaga T. Use of electrosurgical units in the endoscopic resection of gastrointestinal tumors. GASTROENTEROLOGIA Y HEPATOLOGIA 2019; 42:512-523. [PMID: 31326105 DOI: 10.1016/j.gastrohep.2019.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/31/2019] [Accepted: 04/05/2019] [Indexed: 12/18/2022]
Abstract
Electrosurgical units (ESUs) are indispensable devices in our endoscopy units. However, many endoscopists are not well-trained on their use and their physical bases are usually not properly studied or understood. In addition, comparative data concerning the settings that may be applied in different circumstances are scarce in the medical literature. Given that it is important to be aware of their strengths and risks, we conducted a review of the available information and research on this topic.
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Affiliation(s)
- José C Marín-Gabriel
- Department of Gastroenterology, Endoscopy Unit, High Risk GI Cancer Clinic, Research Institute, 12 de Octubre (i+12), "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
| | - Raffaella Romito
- Department of Gastroenterology, Hospital de la Santa Creu i Sant Pau, Institut de Reçerca - IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Carlos Guarner-Argente
- Department of Gastroenterology, Hospital de la Santa Creu i Sant Pau, Institut de Reçerca - IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - José Santiago-García
- Department of Gastroenterology, Endoscopy Unit, "Puerta de Hierro-Majadahonda" University Hospital, Autonomous University of Madrid (UAM), Majadahonda (Madrid), Spain
| | - Joaquín Rodríguez-Sánchez
- Department of Gastroenterology, Endoscopy Unit, Hospital Universitario de Ciudad Real, Ciudad Real, Spain
| | - Takashi Toyonaga
- Department of Endoscopy, Kobe University Hospital, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Japan
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8
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Saito Y, Sylvia Wu SY, Ego M, Abe S. Colorectal endoscopic submucosal dissection with use of a bipolar and insulated tip knife. VideoGIE 2019; 4:314-318. [PMID: 31334421 PMCID: PMC6620361 DOI: 10.1016/j.vgie.2019.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Yutaka Saito
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | | | - Mai Ego
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Seiichiro Abe
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
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9
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Aoki T, Nakamura T, Oshikiri T, Hasegawa H, Yamamoto M, Matsuda Y, Kanaji S, Yamashita K, Matsuda T, Sumi Y, Suzuki S, Kakeji Y. Strategy for esophageal non-epithelial tumors based on a retrospective analysis of a single facility. Esophagus 2018; 15:10.1007/s10388-018-0628-6. [PMID: 29936587 DOI: 10.1007/s10388-018-0628-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 06/20/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUND Although most esophageal non-epithelial tumors are benign tumors, such as leiomyomas, they also include gastrointestinal tumors (GISTs); thus, a histopathological diagnosis is indispensable to determine the optimal treatment strategy. However, no consensus has been reached as to the diagnostic methods and treatments for esophageal non-epithelial tumors. The purpose of this study was to evaluate the reliability of the diagnostic methods and treatments for esophageal non-epithelial tumors in our hospital. METHODS All 28 cases of esophageal non-epithelial tumors at Kobe University Hospital from 2008 to 2016 were analyzed retrospectively with respect to the diagnostic methods, histopathological diagnosis, and treatments. RESULTS Three diagnostic methods, endoscopic ultrasonography-guided fine needle aspiration (EUS-FNA), endoscopic incisional biopsy, and endoscopic submucosal dissection (ESD)/endoscopic mucosal resection (EMR), were performed in our hospital. All GIST cases could be correctly diagnosed by EUS-FNA. Tumors less than approximately 20 mm in diameter and located in the superficial layer are good indications for ESD/EMR, which both play roles in diagnosis and treatment. The final diagnoses by these methods consisted of the following: 13 leiomyomas, 5 GISTs, 3 schwannomas, 2 liposarcomas, 3 cysts, 1 reactive lymphoid hyperplasia, and 1 granulosa cell tumor. Fifteen cases underwent surgery. Enucleation or partial resection was performed for leiomyomas, schwannomas and liposarcomas, while esophagectomy was performed for GISTs. Thus, sufficient management of non-epithelial tumors is achieved. CONCLUSIONS Improved endoscopic procedures, including EUS-FNA and ESD/EMR, enabled the appropriate diagnosis and treatment of esophageal non-epithelial tumors.
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Affiliation(s)
- Tomoaki Aoki
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Tetsu Nakamura
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Taro Oshikiri
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Hiroshi Hasegawa
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masashi Yamamoto
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yoshiko Matsuda
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shingo Kanaji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Kimihiro Yamashita
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Takeru Matsuda
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yasuo Sumi
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
- Division of International Clinical Cancer Research, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Satoshi Suzuki
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yoshihiro Kakeji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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