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Brunese MC, Avella P, Cappuccio M, Spiezia S, Pacella G, Bianco P, Greco S, Ricciardelli L, Lucarelli NM, Caiazzo C, Vallone G. Future Perspectives on Radiomics in Acute Liver Injury and Liver Trauma. J Pers Med 2024; 14:572. [PMID: 38929793 PMCID: PMC11204538 DOI: 10.3390/jpm14060572] [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: 04/02/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 06/28/2024] Open
Abstract
Background: Acute liver injury occurs most frequently due to trauma, but it can also occur because of sepsis or drug-induced injury. This review aims to analyze artificial intelligence (AI)'s ability to detect and quantify liver injured areas in adults and pediatric patients. Methods: A literature analysis was performed on the PubMed Dataset. We selected original articles published from 2018 to 2023 and cohorts with ≥10 adults or pediatric patients. Results: Six studies counting 564 patients were collected, including 170 (30%) children and 394 adults. Four (66%) articles reported AI application after liver trauma, one (17%) after sepsis, and one (17%) due to chemotherapy. In five (83%) studies, Computed Tomography was performed, while in one (17%), FAST-UltraSound was performed. The studies reported a high diagnostic performance; in particular, three studies reported a specificity rate > 80%. Conclusions: Radiomics models seem reliable and applicable to clinical practice in patients affected by acute liver injury. Further studies are required to achieve larger validation cohorts.
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Affiliation(s)
- Maria Chiara Brunese
- Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy; (M.C.B.)
| | - Pasquale Avella
- Department of Clinical Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy
- Hepatobiliary and Pancreatic Surgery Unit, Pineta Grande Hospital, 81030 Castel Volturno, Italy
| | - Micaela Cappuccio
- Department of Clinical Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy
| | - Salvatore Spiezia
- Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy; (M.C.B.)
| | - Giulia Pacella
- Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy; (M.C.B.)
| | - Paolo Bianco
- Hepatobiliary and Pancreatic Surgery Unit, Pineta Grande Hospital, 81030 Castel Volturno, Italy
| | - Sara Greco
- Interdisciplinary Department of Medicine, Section of Radiology and Radiation Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | | | - Nicola Maria Lucarelli
- Interdisciplinary Department of Medicine, Section of Radiology and Radiation Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Corrado Caiazzo
- Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy; (M.C.B.)
| | - Gianfranco Vallone
- Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy; (M.C.B.)
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Field X, Crichton JCI, Kong V, Ko J, Laing GL, Bruce J, Clarke DL. AAST grade of liver injury is not the single most important consideration in decision making for liver trauma. Injury 2024:111526. [PMID: 38644076 DOI: 10.1016/j.injury.2024.111526] [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: 07/16/2023] [Revised: 02/28/2024] [Accepted: 04/02/2024] [Indexed: 04/23/2024]
Abstract
BACKGROUND The liver is one of the most injured organs in both blunt and penetrating trauma. The aim of this study was to identify whether the AAST liver injury grade is predictive of need for intervention, risk of complications and mortality in our patient population, and whether this differs between blunt and penetrating-trauma mechanisms. METHODS Retrospective review of all liver injuries from a single high-volume metropolitan trauma centre in South Africa from December 2012 to January 2022. Inclusion criteria were all adults who had sustained traumatic liver injury. Patients were excluded if they were under 15 years of age or had died prior to operation or assessment. Statistical analysis was undertaken using both univariate and multivariate models. RESULTS 709 patients were included, of which 351 sustained penetrating and 358 blunt trauma. Only 24.3 % of blunt compared to 76.4 % of penetrating trauma patients underwent laparotomy (p< 0.001). In blunt trauma, increasing AAST grade correlated directly with rates of laparotomy with an odds ratio of 1.7 (p < 0.001). In penetrating trauma, there was no statistical significance between increasing AAST grade and the rate of laparotomy. The rate of bile leak was 4.5 % (32/709) and of rebleed was 0.7 % (5/709). Five patients underwent ERCP and endoscopic sphincterotomy for bile leak, and three required angio-embolization for rebleeding. Increasing AAST grades were significantly associated with the odds of bile leak in both blunt and penetrating trauma. There was a statistically significant increase in the odds of a rebleed with increasing AAST grade in penetrating trauma. Five patients rebled, of which three died. Seven patients developed hepatic necrosis. Seventy-six patients died (10 %). There were 34/358 (9 %) deaths in the blunt cohort and 42 /351 (11 %) deaths in the penetrating trauma cohort. CONCLUSION AAST grade in isolation is not a good predictor of the need for operation in hepatic trauma. Increasing AAST grade was not found to correlate with increased risk of mortality for both blunt and penetrating hepatic trauma. In both blunt and penetrating trauma, increasing AAST grade is significantly associated with increased bile leak. The need for ERCP and endoscopic sphincterotomy to manage bile leak in our setting is low. Similarly, the rate of rebleeding and of angioembolization was low.
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Affiliation(s)
- Xavier Field
- Department of Surgery, Waikato Hospital, Hamilton, New Zealand
| | - James C I Crichton
- Department of Surgery, Waikato Hospital, Hamilton, New Zealand; Department of Surgery, Christchurch Hospital, Christchurch, New Zealand
| | - Victor Kong
- Department of Surgery, University of the Witwatersrand, Johannesburg, South Africa; Department of Surgery, University of KwaZulu Natal, Durban, South Africa.
| | - Jonathan Ko
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - Grant L Laing
- Department of Surgery, University of KwaZulu Natal, Durban, South Africa
| | - John Bruce
- Department of Surgery, University of KwaZulu Natal, Durban, South Africa
| | - Damian L Clarke
- Department of Surgery, University of the Witwatersrand, Johannesburg, South Africa; Department of Surgery, University of KwaZulu Natal, Durban, South Africa
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Corvino F, Giurazza F, Marra P, Ierardi AM, Corvino A, Basile A, Galia M, Inzerillo A, Niola R. Damage Control Interventional Radiology in Liver Trauma: A Comprehensive Review. J Pers Med 2024; 14:365. [PMID: 38672992 PMCID: PMC11051275 DOI: 10.3390/jpm14040365] [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: 01/28/2024] [Revised: 03/16/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
The liver is the second most common solid organ injured in blunt and penetrating abdominal trauma. Non-operative management (NOM) has become the standard of care for liver injuries in stable patients, where transarterial embolization (TAE) represents the main treatment, increasing success rates and avoiding invasive surgical procedures. In hemodynamically (HD) unstable patients, operative management (OM) is the standard of care. To date, there are no consensus guidelines about the endovascular treatment of patients with HD instability or in ones that responded to initial infusion therapy. A review of the literature was performed for published papers addressing the outcome of using TAE as the primary treatment for HD unstable/transient responder trauma liver patients with hemorrhagic vascular lesions, both as a single treatment and in combination with surgical treatment, focusing additionally on the different definitions used in the literature of unstable and transient responder patients. Our review demonstrated a good outcome in HD unstable/transient responder liver trauma patients treated with TAE but there still remains much debate about the definition of unstable and transient responder patients.
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Affiliation(s)
- Fabio Corvino
- Section of Radiology, Department of Biomedicine, Neuroscience and Advanced Diagnostics (BiND), University Hospital “Paolo Giaccone”, 90127 Palermo, Italy; (M.G.); (A.I.)
- Interventional Radiology Department, AORN “A. Cardarelli”, 80131 Naples, Italy; (F.G.); (R.N.)
| | - Francesco Giurazza
- Interventional Radiology Department, AORN “A. Cardarelli”, 80131 Naples, Italy; (F.G.); (R.N.)
| | - Paolo Marra
- Department of Radiology, Papa Giovanni XXIII Hospital, 24127 Bergamo, Italy;
| | - Anna Maria Ierardi
- Department of Diagnostic and Interventional Radiology, Foundation IRCCS Cà Granda—Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Antonio Corvino
- Medical, Movement and Wellbeing Sciences Department, University of Naples “Parthenope”, 80133 Naples, Italy;
| | - Antonio Basile
- Radiology Unit 1, Department of Medical Surgical Sciences and Advanced Technologies “GF Ingrassia”, University Hospital “Policlinico-San Marco”, University of Catania, 95123 Catania, Italy;
| | - Massimo Galia
- Section of Radiology, Department of Biomedicine, Neuroscience and Advanced Diagnostics (BiND), University Hospital “Paolo Giaccone”, 90127 Palermo, Italy; (M.G.); (A.I.)
| | - Agostino Inzerillo
- Section of Radiology, Department of Biomedicine, Neuroscience and Advanced Diagnostics (BiND), University Hospital “Paolo Giaccone”, 90127 Palermo, Italy; (M.G.); (A.I.)
| | - Raffaella Niola
- Interventional Radiology Department, AORN “A. Cardarelli”, 80131 Naples, Italy; (F.G.); (R.N.)
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Keric N, Shatz DV, Schellenberg M, de Moya M, Moore LJ, Brown CVR, Hartwell JL, Inaba K, Ley EJ, Peck KA, Fox CJ, Rosen NG, Weinberg JA, Coimbra R, Kozar R, Martin MJ. Adult blunt hepatic injury: A Western Trauma Association critical decisions algorithm. J Trauma Acute Care Surg 2024; 96:123-128. [PMID: 37747241 DOI: 10.1097/ta.0000000000004141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Affiliation(s)
- Natasha Keric
- From the Division of Trauma, Surgical Critical Care and Acute Care Surgery, Department of Surgery (N.K.), Banner University Medical Center, Phoenix, Arizona; University of California (D.V.S.), Davis, Sacramento, California; Division of Acute Care Surgery, Department of Surgery, University of Southern California (M.S., K.I., M.J.M.), Los Angeles, California; Division of Acute Care Surgery, Department of Surgery, Medical College of Wisconsin (M.d.M.), Milwaukee, Wisconsin; Division of Acute Care Surgery, Department of Surgery, University of Texas-Houston Medical Center (L.J.M.), Houston, Texas; Division of Acute Care Surgery, Department of Surgery, Dell Medical School (C.V.R.B.), University of Texas at Austin, Austin, Texas; Division of Acute Care Surgery, Department of Surgery, University of Kansas Medical Center (J.L.H.), Kansas City, Kansas; Division of Acute Care Surgery, Department of Surgery, Cedars-Sinai Medical Center (E.J.L.), Los Angeles, California; Scripps Mercy Hospital (K.A.P.), San Diego, California; Division of Vascular Surgery, Department of Surgery, R Adams Cowley Shock Trauma Center (C.J.F., R.K.), Baltimore, Maryland; Division of Pediatric General and Thoracic Surgery, Children's Hospital (N.G.R.), Cincinnati, Ohio; Division of Acute Care Surgery, Department of Surgery, St. Joseph's Medical Center (J.A.W.), Phoenix, Arizona; and Riverside University Health System Medical Center (R.C.), Riverside, California
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Beltzer C, Imach S, Wafaisade A, Lefering R, Kölbel B. Use of angioembolization, treatment modalities and mortality in association with blunt liver trauma in Germany - a data analysis of the TraumaRegister DGU®. Langenbecks Arch Surg 2023; 409:6. [PMID: 38093037 PMCID: PMC10719148 DOI: 10.1007/s00423-023-03196-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
PURPOSE Angioembolization (ANGIO) is highly valued in national and international guideline recommendations as a treatment adjunct with blunt liver trauma (BLT). The literature on BLT shows that treatment, regardless of the severity of liver injury, can be accomplished with a high success rate using nonoperative management (NOM). An indication for surgical therapy (SURG) is only seen in hemodynamically instable patients. For Germany, it is unclear how frequently NOM ± ANGIO is actually used, and what mortality is associated with BLT. METHODS A retrospective systematic data analysis of patients with BLT from the TraumaRegister DGU® was performed. All patients with liver injury AIS ≥ 2 between 2015 and 2020 were included. The focus was to evaluate the use ANGIO as well as treatment selection (NOM vs. SURG) and mortality in relation to liver injury severity. Furthermore, independent risk factors influencing mortality were identified, using multivariate logistic regression. RESULTS A total of 2353 patients with BLT were included in the analysis. ANGIO was used in 18 cases (0.8%). NOM was performed in 70.9% of all cases, but mainly in less severe liver trauma (AIS ≤ 2, abbreviated injury scale). Liver injuries AIS ≥ 3 were predominantly treated surgically (64.6%). Overall mortality associated with BLT was 16%. Severity of liver injury ≥ AIS 3, age > 60 years, hemodynamic instability (INSTBL), and mass transfusion (≥ 10 packed red blood cells/pRBC) were identified as independent risk factors contributing to mortality in BLT. CONCLUSION ANGIO is rarely used in BLT, contrary to national and international guideline recommendations. In Germany, liver injuries AIS ≥ 3 are still predominantly treated surgically. BLT is associated with considerable mortality, depending on the presence of specific contributing risk factors.
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Affiliation(s)
- Christian Beltzer
- Department of General, Abdominal and Thoracic Surgery, German Armed Forces Hospital Ulm, Ulm, Germany.
| | - Sebastian Imach
- Department of Trauma and Orthopedic Surgery, Cologne-Merheim Medical Center (CMMC), University Witten/Herdecke, Cologne, Germany
| | - Arasch Wafaisade
- Department of Trauma and Orthopedic Surgery, Cologne-Merheim Medical Center (CMMC), University Witten/Herdecke, Cologne, Germany
| | - Rolf Lefering
- Institute for Research in Operative Medicine, Witten/Herdecke University, Cologne, Germany
| | - Benny Kölbel
- Department of General, Abdominal and Thoracic Surgery, German Armed Forces Hospital Ulm, Ulm, Germany
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Rozycki GF, Sakran JV, Manukyan MC, Feliciano DV, Radisic A, You B, Hu F, Wooster M, Noll K, Haut ER. Angioembolization May Improve Survival in Patients With Severe Hepatic Injuries. Am Surg 2023; 89:5492-5500. [PMID: 36786019 DOI: 10.1177/00031348231157416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
INTRODUCTION Although reports on angioembolization (AE) show favorable results for severe hepatic trauma, information is lacking on its benefit in the management and mechanisms of injury (MOI). This study examined patient outcomes with severe hepatic injuries to determine the association of in-hospital mortality with AE. The hypothesis is that AE is associated with increased survival in severe hepatic injuries. METHODS Demographics, age, sex, MOI, shock index (SI), ≥6 units packed red blood cells (PRBCs) per hospital length of stay (LOS), intensive care unit LOS, injury severity score (ISS), and AE were collected. The primary outcome was in-hospital mortality. Patients were stratified into groups according to MOI, AE, and operative vs non-operative management. Multivariable logistic regression determined the independent association of mortality with AE vs no AE and operative vs nonoperative management and modeled the odds of mortality controlling for MOI, AE vs no AE, age and ISS groups, SI >.9, and ≥6 units PRBCs/LOS. RESULTS From 2013 to 2018, 2462 patients (1744 blunt; 718 penetrating) were treated for severe hepatic injuries. AE was used in only 21% of patients. Mortality rates increased with higher ISS and age. AE was associated with mortality when compared to patients who did not undergo AE. The strongest associations with mortality were ISS ≥25, transfusion ≥ 6 units PRBCs/LOS, and age ≥65 years. CONCLUSIONS AE is underutilized in severe hepatic trauma. AE may be a valuable adjunct in the treatment of severe hepatic injuries especially in older patients and those needing exploratory laparotomy.
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Affiliation(s)
- Grace F Rozycki
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Joseph V Sakran
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mariuxi C Manukyan
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David V Feliciano
- Shock Trauma Center/University of Maryland School of Medicine, Baltimore, MD, USA
| | - Amanda Radisic
- Department of Surgery, School of Medicine, Rutgers University, New Brunswick, NJ, USA
| | - Bin You
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fang Hu
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Meghan Wooster
- Southeast Iowa Regional Medical Center, Burlington, IA, USA
| | - Kathy Noll
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elliott R Haut
- Division of Acute Care Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Cioffi SP, Cimbanassi S, Chiara O. Blunt abdominal trauma: watch and wait. Curr Opin Crit Care 2023; 29:674-681. [PMID: 37861213 DOI: 10.1097/mcc.0000000000001095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
PURPOSE OF REVIEW This review examines recent advancements in nonoperative management (NOM) of hemodynamically stable blunt abdominal trauma, focusing on expanding patient selection for observation-first strategies, particularly for high-grade solid organ injuries. RECENT FINDINGS Advances include a more deliberate nonoperative approach, allowing for broader patient inclusion in diagnostic and interventional angiography. Strict clinical monitoring and appropriate follow-up strategies are crucial to identify early signs of clinical progression and complications. Repeated contrast-enhanced CT (CECT) scan can be used for close observation of high-risk injuries, while the repetition of CECTs may be avoided for lower-risk cases, such as specific high-grade kidney injuries. The role of contrast-enhanced ultrasound (CEUS) in detecting sequelae of nonoperative approaches is still debated and has lot of potential, with ongoing trials exploring possible advantages. SUMMARY Multidisciplinary trauma teams play a crucial role in nonoperative management, particularly for high-grade injuries. A careful selection of patients is essential to minimize failure rates. Complications of nonoperative and angiographic approaches should be managed according to local expertise.
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Affiliation(s)
- Stefano Pb Cioffi
- Department of surgical science, Sapienza University of Rome, Rome
- General Surgery - Trauma Team, Niguarda Hospital, Milan
| | - Stefania Cimbanassi
- General Surgery - Trauma Team, Niguarda Hospital, Milan
- Department of surgical pathophysiology and transplant, University of Milan, Milan, Italy
| | - Osvaldo Chiara
- General Surgery - Trauma Team, Niguarda Hospital, Milan
- Department of surgical pathophysiology and transplant, University of Milan, Milan, Italy
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Hanaki T, Tokuyasu N, Yata S, Kishino M, Murakami Y, Shishido Y, Miyatani K, Kihara K, Matsunaga T, Yamamoto M, Sakamoto T, Hasegawa T, Fujiwara Y. Hepatectomy for massive hepatic necrosis after transcatheter arterial embolization hemostasis for hepatic hemorrhage following hepatic trauma: A case report. Clin Case Rep 2023; 11:e7888. [PMID: 37731968 PMCID: PMC10507280 DOI: 10.1002/ccr3.7888] [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: 07/20/2023] [Revised: 08/18/2023] [Accepted: 08/25/2023] [Indexed: 09/22/2023] Open
Abstract
Key Clinical Message Although partial hepatic necrosis often occurs following endovascular treatment for bleeding associated with hepatic trauma, it is relatively rare that additional treatment is required. However, invasive procedures such as hepatic resection should sometimes be considered when infection occurs over massive hepatic necrosis. Abstract Although partial hepatic necrosis following endovascular treatment for bleeding associated with hepatic trauma is occasionally experienced, it is relatively rare for the necrotic area of the liver to require additional treatment. However, invasive procedures such as hepatic resection should sometimes be considered when infection occurs over massive hepatic necrosis.
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Affiliation(s)
- Takehiko Hanaki
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Naruo Tokuyasu
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Shinsaku Yata
- Department of Multidisciplinary Internal Medicine, Division of Radiology, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Mikiya Kishino
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Yuki Murakami
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Yuji Shishido
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Kozo Miyatani
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Kyoichi Kihara
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Tomoyuki Matsunaga
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Manabu Yamamoto
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Teruhisa Sakamoto
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Toshimichi Hasegawa
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
| | - Yoshiyuki Fujiwara
- Department of Surgery, Division of Gastrointestinal and Pediatric Surgery, School of Medicine, Faculty of MedicineTottori UniversityYonagoJapan
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