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      Minimally invasive oesophagectomy versus open esophagectomy for resectable esophageal cancer: a meta-analysis

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          Abstract

          Background

          Open esophagectomy (OE) is associated with significant morbidity and mortality. Minimally invasive oesophagectomy (MIO) reduces complications in resectable esophageal cancer. The aim of this study is to explore the superiority of MIO in reducing complications and in-hospital mortality than OE.

          Methods

          MEDLINE, Embase, Science Citation Index, Wanfang, and Wiley Online Library were thoroughly searched. Odds ratio (OR)/weighted mean difference (WMD) with a 95% confidence interval (CI) was used to assess the strength of association.

          Results

          Fifty-seven studies containing 15,790 cases of resectable esophageal cancer were included. MIO had less intraoperative blood loss, short hospital stay, and high operative time ( P < 0.05) than OE. MIO also had reduced incidence of total complications; (OR = 0.700, 95% CI = 0.626 ~ 0.781, P V  < 0.05), pulmonary complications (OR = 0.527, 95% CI = 0431 ~ 0.645, P V  < 0.05), cardiovascular complications (OR = 0.770, 95% CI = 0.681 ~ 0.872, P V  < 0.05), and surgical technology related (STR) complications (OR = 0.639, 95% CI = 0.522 ~ 0.781, P V  < 0.05), as well as lower in-hospital mortality (OR = 0.668, 95% CI = 0.539 ~ 0.827, P V  < 0.05). However, the number of harvested lymph nodes, intensive care unit (ICU) stay, gastrointestinal complications, anastomotic leak (AL), and recurrent laryngeal nerve palsy (RLNP) had no significant difference.

          Conclusions

          MIO is superior to OE in terms of perioperative complications and in-hospital mortality.

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          Most cited references93

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          Active smoking and the risk of type 2 diabetes: a systematic review and meta-analysis.

          Observational studies have suggested an association between active smoking and the incidence of type 2 diabetes. To conduct a systematic review with meta-analysis of studies assessing the association between active smoking and incidence of type 2 diabetes. A search of MEDLINE (1966 to May 2007) and EMBASE (1980 to May 2007) databases was supplemented by manual searches of bibliographies of key retrieved articles, reviews of abstracts from scientific meetings, and contact with experts. Studies were included if they reported risk of impaired fasting glucose, impaired glucose tolerance, or type 2 diabetes in relationship to smoking status at baseline; had a cohort design; and excluded persons with diabetes at baseline. Two authors independently extracted the data, including the presence or absence of active smoking at baseline, the risk of diabetes, methods used to detect diabetes, and key criteria of study quality. Relative risks (RRs) were pooled using a random-effects model. Associations were tested in subgroups representing different patient characteristics and study quality criteria. The search yielded 25 prospective cohort studies (N = 1.2 million participants) that reported 45 844 incident cases of diabetes during a study follow-up period ranging from 5 to 30 years. Of the 25 studies, 24 reported adjusted RRs greater than 1 (range for all studies, 0.82-3.74). The pooled adjusted RR was 1.44 (95% confidence interval [CI], 1.31-1.58). Results were consistent and statistically significant in all subgroups. The risk of diabetes was greater for heavy smokers (> or =20 cigarettes/day; RR, 1.61; 95% CI, 1.43-1.80) than for lighter smokers (RR,1.29; 95% CI, 1.13-1.48) and lower for former smokers (RR, 1.23; 95% CI, 1.14-1.33) compared with active smokers, consistent with a dose-response phenomenon. Active smoking is associated with an increased risk of type 2 diabetes. Future research should attempt to establish whether this association is causal and to clarify its mechanisms.
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            Minimally invasive versus open oesophagectomy for patients with oesophageal cancer: a multicentre, open-label, randomised controlled trial.

            Surgical resection is regarded as the only curative option for resectable oesophageal cancer, but pulmonary complications occurring in more than half of patients after open oesophagectomy are a great concern. We assessed whether minimally invasive oesophagectomy reduces morbidity compared with open oesophagectomy. We did a multicentre, open-label, randomised controlled trial at five study centres in three countries between June 1, 2009, and March 31, 2011. Patients aged 18-75 years with resectable cancer of the oesophagus or gastro-oesophageal junction were randomly assigned via a computer-generated randomisation sequence to receive either open transthoracic or minimally invasive transthoracic oesophagectomy. Randomisation was stratified by centre. Patients, and investigators undertaking interventions, assessing outcomes, and analysing data, were not masked to group assignment. The primary outcome was pulmonary infection within the first 2 weeks after surgery and during the whole stay in hospital. Analysis was by intention to treat. This trial is registered with the Netherlands Trial Register, NTR TC 2452. We randomly assigned 56 patients to the open oesophagectomy group and 59 to the minimally invasive oesophagectomy group. 16 (29%) patients in the open oesophagectomy group had pulmonary infection in the first 2 weeks compared with five (9%) in the minimally invasive group (relative risk [RR] 0·30, 95% CI 0·12-0·76; p=0·005). 19 (34%) patients in the open oesophagectomy group had pulmonary infection in-hospital compared with seven (12%) in the minimally invasive group (0·35, 0·16-0·78; p=0·005). For in-hospital mortality, one patient in the open oesophagectomy group died from anastomotic leakage and two in the minimally invasive group from aspiration and mediastinitis after anastomotic leakage. These findings provide evidence for the short-term benefits of minimally invasive oesophagectomy for patients with resectable oesophageal cancer. Digestive Surgery Foundation of the Unit of Digestive Surgery of the VU University Medical Centre. Copyright © 2012 Elsevier Ltd. All rights reserved.
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              Extended transthoracic resection compared with limited transhiatal resection for adenocarcinoma of the esophagus.

              Controversy exists about the best surgical treatment for esophageal carcinoma. We randomly assigned 220 patients with adenocarcinoma of the mid-to-distal esophagus or adenocarcinoma of the gastric cardia involving the distal esophagus either to transhiatal esophagectomy or to transthoracic esophagectomy with extended en bloc lymphadenectomy. Principal end points were overall survival and disease-free survival. Early morbidity and mortality, the number of quality-adjusted life-years gained, and cost effectiveness were also determined. A total of 106 patients were assigned to undergo transhiatal esophagectomy, and 114 to undergo transthoracic esophagectomy. Demographic characteristics and characteristics of the tumor were similar in the two groups. Perioperative morbidity was higher after transthoracic esophagectomy, but there was no significant difference in in-hospital mortality (P=0.45). After a median follow-up of 4.7 years, 142 patients had died--74 (70 percent) after transhiatal resection and 68 (60 percent) after transthoracic resection (P=0.12). Although the difference in survival was not statistically significant, there was a trend toward a survival benefit with the extended approach at five years: disease-free survival was 27 percent in the transhiatal-esophagectomy group, as compared with 39 percent in the transthoracic-esophagectomy group (95 percent confidence interval for the difference, -1 to 24 percent [the negative value indicates better survival with transhiatal resection]), whereas overall survival was 29 percent as compared with 39 percent (95 percent confidence interval for the difference, -3 to 23 percent). Transhiatal esophagectomy was associated with lower morbidity than transthoracic esophagectomy with extended en bloc lymphadenectomy. Although median overall, disease-free, and quality-adjusted survival did not differ statistically between the groups, there was a trend toward improved long-term survival at five years with the extended transthoracic approach. Copyright 2002 Massachusetts Medical Society
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                Author and article information

                Contributors
                wzs881117@163.com
                dongm311400@sina.com
                lih471003@sina.com
                yuan2559052@163.com
                Journal
                World J Surg Oncol
                World J Surg Oncol
                World Journal of Surgical Oncology
                BioMed Central (London )
                1477-7819
                8 December 2016
                8 December 2016
                2016
                : 14
                : 304
                Affiliations
                Department of Thoracic Surgery, Tumor Hospital of Xinjiang Medical University, Urumqi, China
                Article
                1062
                10.1186/s12957-016-1062-7
                5143462
                27927246
                3b137012-8004-414c-8ee6-e1ef7e57fe44
                © The Author(s). 2016

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                : 10 August 2016
                : 23 November 2016
                Categories
                Review
                Custom metadata
                © The Author(s) 2016

                Surgery
                minimally invasive esophagectomy,open esophagectomy,complications,mortality
                Surgery
                minimally invasive esophagectomy, open esophagectomy, complications, mortality

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