• Annals of surgery · Nov 2022

    Meta Analysis

    Sarcopenia Determined by Skeletal Muscle Index Predicts Overall Survival, Disease-free Survival, and Postoperative Complications in Resectable Esophageal Cancer: A Systematic Review and Meta-analysis.

    • Uzair M Jogiat, Hannah Sasewich, Simon R Turner, Vickie Baracos, Dean T Eurich, Heather Filafilo, and BédardEric L RELRDivision of Thoracic Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada..
    • Division of Thoracic Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada.
    • Ann. Surg. 2022 Nov 1; 276 (5): e311-e318.

    BackgroundSarcopenia has been identified as a prognostic factor among certain types of cancer. In esophageal cancer, patients are at increased risk of malnutrition and sarcopenia, ultimately contributing to poor outcomes. A systematic review was conducted to determine whether sarcopenia, defined by the skeletal muscle index, is predictive of overall survival, disease-free survival, and postoperative complications in resectable esophageal cancer.Materials And MethodsA systematic search of MEDLINE, EMBASE, Scopus, Web of Science, and Cochrane Library was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines up until January 2021. The primary outcome was overall survival; secondary outcomes included disease-free survival, pulmonary complications, and anastomotic leak.ResultsTwenty-one studies (4 prospective; 17 retrospective; 3966 patients) were included. Sarcopenia was present in 1940 (48.1%) patients and was associated with lower overall survival [hazard ratio (HR): 1.56; 95% confidence interval (CI): 1.25-1.95; P <0.00001; I2 =71%] and disease-free survival (HR: 1.73; 95% CI: 1.04-2.87; P =0.03; I2 =51%). A decrease in skeletal muscle index, independent of sarcopenia status, was associated with lower overall survival (HR: 1.81; 95% CI: 1.20-2.73; P =0.005; I2 =92%). Sarcopenia was associated with increased odds of pulmonary complications (odds ratio: 1.86; 95% CI: 1.29-2.66; P =0.0008; I2 =41%) and increased odds of anastomotic leak (odds ratio: 1.46; 95% CI: 1.11-1.93; P =0.008; I2 =0%).ConclusionsSarcopenia is a predictor of overall survival, disease-free survival, and postoperative complications in patients with resectable esophageal cancer. Studies on the modifiability of sarcopenia in the preoperative period will help determine the utility of nutritional interventions.Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.

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