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Cantrell MC, Celso B, Mobley EM, Pather K, Alabbas H, Awad ZT. The anastomotic leak triad: preoperative patient characteristics, intraoperative risk factors, and postoperative outcomes. J Gastrointest Surg 2024; 28:1622-1628. [PMID: 39089485 DOI: 10.1016/j.gassur.2024.07.020] [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: 06/06/2024] [Revised: 07/18/2024] [Accepted: 07/27/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND The aim of this study was to determine perioperative risk factors associated with anastomotic leak (AL) after minimally invasive esophagectomy (MIE) and its association with cancer recurrence and overall survival. METHODS This retrospective observational study of electronic health record data included patients who underwent MIE for esophageal cancer between September 2013 and July 2023 at a tertiary center. The primary outcome was AL after esophagectomy, whereas the secondary outcomes included time to cancer recurrence and overall survival. Perioperative patient factors were evaluated to determine their associations with the primary and the secondary outcomes. Propensity score-matched logistic regression assessed the associations between perioperative factors and AL. Kaplan-Meier survival curves compared cancer recurrence and overall survival by AL. RESULTS A total of 251 consecutive patients with esophageal cancer were included in the analysis; 15 (6%) developed AL. Anemia, hospital complications, hospital length of stay, and 30-day readmissions significantly differed from those with and without AL (P = .037, <.001, <.001, and.016, respectively). Moreover, 30- and 90-day mortality were not statistically affected by the presence of AL (P = .417 and 0.456, respectively). Logistic regression modeling showed drug history and anemia were significantly associated with AL (P = .022 and.011, respectively). The presence of AL did not significantly impact cancer recurrence or overall survival (P = .439 and.301, respectively). CONCLUSION The etiology of AL is multifactorial. Moreover, AL is significantly associated with drug history, preoperative anemia, hospital length of stay, and 30-day readmissions, but it was not significantly associated with 30- or 90-day mortality, cancer recurrence, or overall survival. Patients should be optimized before undergoing MIE with special consideration for correcting anemia. Ongoing research is needed to identify more modifiable risk factors to minimize AL development and its associated morbidity.
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Affiliation(s)
- Michael Calvin Cantrell
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States
| | - Brian Celso
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States
| | - Erin M Mobley
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States
| | - Keouna Pather
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States
| | - Haytham Alabbas
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States
| | - Ziad T Awad
- Department of Surgery, University of Florida College of Medicine, Jacksonville, FL, United States.
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Yunrong T, Jin WW, Mahendran HA, Koon YB, Jahit S, Kamaruddin MA, Anuar N, Daud NAM. Pre-operative psoas muscle index, a surrogate for sarcopenia; as a predictor of post-esophagectomy complications. Dis Esophagus 2024; 37:doad072. [PMID: 38163959 DOI: 10.1093/dote/doad072] [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: 09/18/2023] [Revised: 09/18/2023] [Accepted: 10/17/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Esophagectomy is the standard of care for curative esophageal cancer. However, it is associated with significant morbidity and mortality. Esophageal cancer is known to negatively affect the nutritional status of patients and many manifest cancer sarcopenia. At present, measures of sarcopenia involve complex and often subjective measurements. We assess whether the Psoas Muscle Index (PMI); an inexpensive, simple, validated method used to diagnose sarcopenia, can be used to predict adverse outcomes in patients after curative esophagectomy. METHODS Multi-centre, retrospective cohort between 2010-2020, involving all consecutive patients undergoing curative esophagectomy for esophageal cancer in University Malaya Medical Centre, Sungai Buloh Hospital, and Sultanah Aminah Hospital. The cut-off value differentiating low and normal PMI is defined as 443mm2/m2 in males and 326326 mm2/m2 in females. Complications were recorded using the Clavien-Dindo Scale. RESULTS There was no statistical correlation between PMI and major post-esophagectomy complications (p-value: 0.495). However, complication profile was different, and patients with low PMIs had higher 30-day mortality (21.7%) when compared with patients with normal PMI (8.1%) (p-value: 0.048). CONCLUSIONS Although PMI did not significantly predict post-esophagectomy complications, low PMI correlates with higher 30-day mortality, reflecting a lower tolerance for complications among these patients. PMI is a useful, inexpensive tool to identify sarcopenia and aids the patient selection process. This alerts healthcare professionals to institute intensive physiotherapy and nutritional optimization prior to esophagectomy.
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Affiliation(s)
- Tan Yunrong
- Surgical Department, Sultanah Aminah Hospital, Johor Bharu, Johor, Malaysia
| | - Wong Wei Jin
- Upper Gastrointestinal Surgery Unit, Surgical Department, University Malaya Medical Centre, Petaling Jaya, Malaysia
| | | | | | - Shukri Jahit
- Surgical Department, National Cancer Institute, Putrajaya, Malaysia
| | | | - Nor'Aini Anuar
- Diagnostics and Imaging Department, Sungai Buloh Hospital, Sungai Buloh, Selangor, Malaysia
| | - Noor Aida Mat Daud
- Diagnostics and Imaging Department, Sungai Buloh Hospital, Sungai Buloh, Selangor, Malaysia
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Housman B, Lee DS, Flores R. A narrative review of anastomotic leak in the Ivor Lewis esophagectomy: expected, accepted, but preventable. Transl Cancer Res 2023; 12:2405-2419. [PMID: 37859730 PMCID: PMC10583019 DOI: 10.21037/tcr-23-515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 08/01/2023] [Indexed: 10/21/2023]
Abstract
Background and Objective Anastomotic leak (AL) remains a common and highly morbid complication after Ivor Lewis Esophagectomy. Leak is associated with increased morbidity, mortality, strictures and even cancer recurrence. Unfortunately, despite advances in surgical technique and perioperative care, the reported frequency of AL has remained largely unchanged. Methods A PubMed search for all English-language articles that discuss Ivor Lewis esophagectomy, AL, risk factors, and outcomes was conducted from 1901 to 2023 prioritizing research from randomized trials that evaluated outcomes from patients undergoing esophagectomy. Key Content and Findings This narrative review will discuss the prevailing literature on AL, risk factors and outcomes with a focus on its relationship to the Ivor Lewis esophagectomy (ILE). In particular, we emphasize that the gastric conduit, as commonly created for most esophagectomy procedures, is inherently vulnerable to ischemia. We will show trends in the literature that have contributed to the high rate of postoperative complications, with a focus on the AL. In addition, we propose that the traditional Ivor Lewis procedure itself is a risk factor for AL. We review a surgical alternative that increases blood supply of the conduit, and is associated with reduced leak, no strictures, and improved surgical outcomes. Conclusions Multiple factors contribute to AL after esophagectomy; including several current surgical practices. We believe that some of them, especially the commonly accepted approach to the gastric conduit, can be modified to optimize tissue perfusion. With further investigation, we may reduce the incidence of short and long-term anastomotic complications and improve surgical outcomes.
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Affiliation(s)
- Brian Housman
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, New York, NY, USA
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Pickering OJ, van Boxel GI, Carter NC, Mercer SJ, Knight BC, Pucher PH. Learning curve for adoption of robot-assisted minimally invasive esophagectomy: a systematic review of oncological, clinical, and efficiency outcomes. Dis Esophagus 2023; 36:6961031. [PMID: 36572404 DOI: 10.1093/dote/doac089] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/25/2022] [Indexed: 05/30/2023]
Abstract
BACKGROUND Robot-assisted minimally invasive esophagectomy (RAMIE) is gaining increasing popularity as an operative approach. Learning curves to achieve surgical competency in robotic-assisted techniques have shown significant variation in learning curve lengths and outcomes. This study aimed to summarize the current literature on learning curves for RAMIE. METHODS A systematic review was conducted in line with PRISMA guidelines. Electronic databases PubMed, MEDLINE, and Cochrane Library were searched, and articles reporting on learning curves in RAMIE were identified and scrutinized. Studies were eligible if they reported changes in operative outcomes over time, or learning curves, for surgeons newly adopting RAMIE. RESULTS Fifteen studies reporting on 1767 patients were included. Nine studies reported on surgeons with prior experience of robot-assisted surgery prior to adopting RAMIE, with only four studies outlining a specified RAMIE adoption pathway. Learning curves were most commonly analyzed using cumulative sum control chart (CUSUM) and were typically reported for lymph node yields and operative times, with significant variation in learning curve lengths (18-73 cases and 20-80 cases, respectively). Most studies reported adoption without significant impact on clinical outcomes such as anastomotic leak; significant learning curves were more likely in studies, which did not report a formal learning or adoption pathway. CONCLUSION Reported RAMIE adoption phases are variable, with some authors suggesting significant impact to patients. With robust training through formal programmes or proctorship, however, others report RAMIE adoption without impact on clinical outcomes. A formalized adoption curriculum appears critical to prevent adverse effects on operative efficiency and patient care.
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Affiliation(s)
- Oliver J Pickering
- School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Gijs I van Boxel
- Department of General Surgery, Queen Alexandra Hospital, University Hospital Portsmouth NHS Trust, Portsmouth, UK
| | - Nick C Carter
- Department of General Surgery, Queen Alexandra Hospital, University Hospital Portsmouth NHS Trust, Portsmouth, UK
| | - Stuart J Mercer
- Department of General Surgery, Queen Alexandra Hospital, University Hospital Portsmouth NHS Trust, Portsmouth, UK
| | - Benjamin C Knight
- Department of General Surgery, Queen Alexandra Hospital, University Hospital Portsmouth NHS Trust, Portsmouth, UK
| | - Philip H Pucher
- Department of General Surgery, Queen Alexandra Hospital, University Hospital Portsmouth NHS Trust, Portsmouth, UK
- Department of Pharmacology and Biosciences, University of Portsmouth, Portsmouth, UK
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Wang Q, Mine S, Nasu M, Fukunaga T, Nojiri S, Zhang CD. Association of hospital volume and long-term survival after esophagectomy: A systematic review and meta-analysis. Front Surg 2023; 10:1161938. [PMID: 37151870 PMCID: PMC10160622 DOI: 10.3389/fsurg.2023.1161938] [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: 02/13/2023] [Accepted: 03/27/2023] [Indexed: 05/09/2023] Open
Abstract
Background It remains controversial whether esophageal cancer patients may benefit from esophagectomy in specialized high-volume hospitals. Here, the effect of hospital volume on overall survival (OS) of esophageal cancer patients post esophagectomy was assessed. Methods PubMed, Embase, and Cochrane Library were systematically searched for relevant published articles between January 1990 and May 2022. The primary outcome was OS after esophagectomy in high- vs. low-volume hospitals. Random effect models were applied for all meta-analyses. Subgroup analysis were performed based on volume grouping, sample size, study country, year of publication, follow-up or study quality. Sensitivity analyses were conducted using the leave-one-out method. The Newcastle-Ottawa Scale was used to assess the study quality. This study followed the Preferred Reporting Items for Systematic Reviews and Meta-analysis guidance, and was registered (identifier: INPLASY202270023). Results A total of twenty-four studies with 113,014 patients were finally included in the meta-analysis. A significant improvement in OS after esophagectomy was observed in high-volume hospitals as compared to that in their low-volume counterparts (HR: 0.77; 95% CI: 0.71-0.84, P < 0.01). Next, we conducted subgroup analysis based on volume grouping category, consistent results were found that high-volume hospitals significantly improved OS after esophagectomy than their low-volume counterparts. Subgroup analysis and sensitivity analyses further confirmed that all the results were robust. Conclusions Esophageal cancer should be centralized in high-volume hospitals.
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Affiliation(s)
- Qing Wang
- Department of Esophageal and Gastroenterological Surgery, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Shinji Mine
- Department of Esophageal and Gastroenterological Surgery, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Motomi Nasu
- Department of Esophageal and Gastroenterological Surgery, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tetsu Fukunaga
- Department of Esophageal and Gastroenterological Surgery, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shuko Nojiri
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Chun-Dong Zhang
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Oh TK, Song IA. Risk factors and outcomes of fatal respiratory events after esophageal cancer surgery from 2011 through 2018: a nationwide cohort study in South Korea. Esophagus 2022; 19:401-409. [PMID: 35218468 DOI: 10.1007/s10388-022-00914-9] [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: 12/26/2021] [Accepted: 02/21/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Pulmonary complications are common after esophageal cancer surgery, but information regarding fatal respiratory events, such as postoperative acute respiratory distress syndrome (ARDS) and respiratory failure, is lacking. We aimed to investigate the prevalence, risk factors, and outcomes of fatal respiratory events after esophageal cancer surgery. METHODS We performed a retrospective population-based cohort study based on data from the National Health Insurance Service database in South Korea. All adult patients diagnosed with esophageal cancer who underwent esophageal surgery between January 2011 and December 2018 were included. RESULTS A total of 7039 patients were included in the final analysis. Among them, 100 patients (1.4%) experienced fatal respiratory adverse events (ARDS, 55 patients [0.8%]; respiratory failure, 45 patients [0.6%]). On multivariable logistic regression, residence in rural areas (vs. urban areas) at the time of surgery, open thoracotomy (vs. video-assisted thoracoscopic surgery), and lower annual case volume were associated with a higher prevalence of fatal respiratory adverse events. Moreover, postoperative fatal respiratory adverse events were related to increased in-hospital mortality, 1 year mortality, prolonged hospitalization, and increased total hospitalization costs. CONCLUSION In South Korea, 1.4% of patients experienced fatal respiratory events (ARDS or respiratory failure) after esophageal cancer surgery. Some factors were revealed as risk factors for fatal respiratory events, and fatal respiratory events worsened clinical outcomes after esophageal cancer surgery.
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Affiliation(s)
- Tak Kyu Oh
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gumi-ro, 173, Beon-gil, Bundang-gu, Seongnam, 13620, South Korea
- Department of Anesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul, South Korea
| | - In-Ae Song
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gumi-ro, 173, Beon-gil, Bundang-gu, Seongnam, 13620, South Korea.
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A Study on Risk Factors Associated with Reflux Esophagitis in Patients Undergoing Esophageal Cancer Surgery. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:3409693. [PMID: 35388335 PMCID: PMC8977308 DOI: 10.1155/2022/3409693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/04/2022] [Accepted: 03/16/2022] [Indexed: 02/07/2023]
Abstract
Objective To investigate the risk factors associated with reflux esophagitis in patients undergoing esophageal cancer surgery and to provide reference for the prevention and treatment of reflux esophagitis. Methods In the manner retrospective study, the data of 300 patients with esophageal cancer who received the surgical treatment in our hospital (January 2018-December 2020) were retrospectively reviewed. The 300 patients were divided into the occurrence group (n = 45) and nonoccurrence group (n = 255) depending on whether they had reflux esophagitis after surgery. The social demographic data and clinical data of the patients in the two groups were collected. These data were classified into the personal factors and surgical factors. The single-factor analysis method was adopted to analyze the effects of the personal and surgical factors on reflux esophagitis. The factors with statistically significant differences in the single-factor analysis were analyzed by logistic regression to verify the factors were the risk factors associated with reflux esophagitis in patients undergoing esophageal cancer surgery. Results The differences in the bodyweight, body mass index (BMI), length of the resected esophagus, surgical approach, intraoperative blood loss, gastrointestinal decompression volume, and surgery time between the two groups were of statistical significance (P < 0.05). After being tested by the logistics multivariate analysis, length of the resected esophagus, whole stomach reconstruction, intraoperative blood loss, and surgery time were identified as the risk factors associated with reflux esophagitis in patients undergoing esophageal cancer surgery. Conclusion The length of the resected esophagus, whole stomach reconstruction, intraoperative blood loss, and surgery time were the risk factors associated with reflux esophagitis in patients undergoing esophageal cancer surgery. It is necessary to choose the appropriate surgical approach according to the patients' conditions in practice and to strengthen the prevention and treatment of reflux esophagitis.
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Lei LL, Song X, Zhao XK, Xu RH, Wei MX, Sun L, Wang PP, Yang MM, Hu JF, Zhong K, Han WL, Han XN, Fan ZM, Wang R, Li B, Zhou FY, Wang XZ, Zhang LG, Bao QD, Qin YR, Chang ZW, Ku JW, Yang HJ, Yuan L, Ren JL, Li XM, Wang LD. Long-term effect of hospital volume on the postoperative prognosis of 158,618 patients with esophageal squamous cell carcinoma in China. Front Oncol 2022; 12:1056086. [PMID: 36873301 PMCID: PMC9978392 DOI: 10.3389/fonc.2022.1056086] [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: 09/28/2022] [Accepted: 12/16/2022] [Indexed: 02/18/2023] Open
Abstract
Background The impact of hospital volume on the long-term survival of esophageal squamous cell carcinoma (ESCC) has not been well assessed in China, especially for stage I-III stage ESCC. We performed a large sample size study to assess the relationships between hospital volume and the effectiveness of ESCC treatment and the hospital volume value at the lowest risk of all-cause mortality after esophagectomy in China. Aim To investigate the prognostic value of hospital volume for assessing postoperative long-term survival of ESCC patients in China. Methods The date of 158,618 patients with ESCC were collected from a database (1973-2020) established by the State Key Laboratory for Esophageal Cancer Prevention and Treatment, the database includes 500,000 patients with detailed clinical information of pathological diagnosis and staging, treatment approaches and survival follow-up for esophageal and gastric cardia cancers. Intergroup comparisons of patient and treatment characteristics were conducted with the X2 test and analysis of variance. The Kaplan-Meier method with the log-rank test was used to draw the survival curves for the variables tested. A Multivariate Cox proportional hazards regression model was used to analyze the independent prognostic factors for overall survival. The relationship between hospital volume and all-cause mortality was assessed using restricted cubic splines from Cox proportional hazards models. The primary outcome was all-cause mortality. Results In both 1973-1996 and 1997-2020, patients with stage I-III stage ESCC who underwent surgery in high volume hospitals had better survival than those who underwent surgery in low volume hospitals (both P<0.05). And high volume hospital was an independent factor for better prognosis in ESCC patients. The relationship between hospital volume and the risk of all-cause mortality was half-U-shaped, but overall, hospital volume was a protective factor for esophageal cancer patients after surgery (HR<1). The concentration of hospital volume associated with the lowest risk of all-cause mortality was 1027 cases/year in the overall enrolled patients. Conclusion Hospital volume can be used as an indicator to predict the postoperative survival of ESCC patients. Our results suggest that the centralized management of esophageal cancer surgery is meaningful to improve the survival of ESCC patients in China, but the hospital volume should preferably not be higher than 1027 cases/year. Core tip Hospital volume is considered to be a prognostic factor for many complex diseases. However, the impact of hospital volume on long-term survival after esophagectomy has not been well evaluated in China. Based on a large sample size of 158,618 ESCC patients in China spanning 47 years (1973-2020), We found that hospital volume can be used as a predictor of postoperative survival in patients with ESCC, and identified hospital volume thresholds with the lowest risk of death from all causes. This may provide an important basis for patients to choose hospitals and have a significant impact on the centralized management of hospital surgery.
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Affiliation(s)
- Ling-Ling Lei
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Xin Song
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Xue-Ke Zhao
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Rui-Hua Xu
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Meng-Xia Wei
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Lin Sun
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Pan-Pan Wang
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Miao-Miao Yang
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing-Feng Hu
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Kan Zhong
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Wen-Li Han
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Xue-Na Han
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Zong-Min Fan
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Ran Wang
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Bei Li
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Fu-You Zhou
- Department of Thoracic Surgery, Anyang Tumor Hospital, Anyang, Henan, China
| | - Xian-Zeng Wang
- Department of Thoracic Surgery, Linzhou People's Hospital, Linzhou, Henan, China
| | - Li-Guo Zhang
- Department of Thoracic Surgery, Xinxiang Central Hospital, Xinxiang, Henan, China
| | - Qi-De Bao
- Department of Oncology, Anyang District Hospital, Anyang, Henan, China
| | - Yan-Ru Qin
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhi-Wei Chang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jian-Wei Ku
- Department of Gastroenterology, The Second Affiliated Hospital of Nanyang Medical College, Nanyang, Henan, China
| | - Hai-Jun Yang
- Department of Pathology, Anyang Tumor Hospital, Anyang, Henan, China
| | - Ling Yuan
- Department of Radiotherapy, The Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital), Zhengzhou, Henan, China
| | - Jing-Li Ren
- Department of Pathology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xue-Min Li
- Department of Pathology, Hebei Provincial Cixian People's Hospital, Cixian, Hebei, China
| | - Li-Dong Wang
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan, China
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