Perioperative blood transfusion has no effect on overall survival after esophageal resection for esophageal squamous cell carcinoma: A retrospective cohort study

Background: The impact of perioperative blood transfusion (PBT) on the prognosis of esophageal cancer patients remains inconclusive. The purpose of this study was to assess the association between PBT and survival in esophageal squamous cell carcinoma (ESCC) patients. Materials and Methods: In this retrospective study, patients with ESCC who underwent esophageal resection from January 2008 to December 2011 were analyzed. The overall survival and postoperative outcomes between PBT and non-PBT patients were compared using Cox regression and propensity score matching (PSM) analysis. Results: A total of 935 patients were enrolled in this study. Before PSM, the 5-year overall survival rates in PBT and non-PBT patients were 48.4% and 56.3% (P=0.001), respectively. The postoperative infection rate in PBT patients was 32.32%, which exceeded the rate of 24.22% in non-PBT patients (P=0.008). PSM created 306 pairs of patients. After PSM, the 5-year overall survival rates in PBT and non-PBT patients were 49.4% and 51.0% (P=0.334), respectively. The postoperative infection rate in PBT patients was 31.04%, which was higher than the rate of 26.47% in non-PBT patients (P=0.105). Multivariable Cox regression analyses showed that PBT was not an independent risk factor for overall survival (HR: 0.792, 95% CI: 0.615-1.021, P=0.072). Conclusion: Perioperative blood transfusion has no effect on the overall survival of ESCC patients.