Association of Preoperative Sarcopenia with the Risk of Anastomotic Leakage in Surgical Esophageal Cancer Patients: A Meta-Analysis

Whether preoperative sarcopenia predicts increased risk of anastomotic leakage in operated esophageal cancer patients remains unclear. This study aimed to identify the relationship between preoperative sarcopenia and the incidence of anastomotic leakage in surgical esophageal cancer. PubMed, EMBASE, CNKI and Web of Science databases were searched up to October 11, 2024. Odds ratios (ORs) and 95% confidence intervals (CIs) were combined and subgroup analysis based on the pathological type, definition of sarcopenia and history of neoadjuvant therapy were performed. Fifteen studies with 3,785 patients were included and 368 patients developed the anastomotic leakage (9.72%). Pooled results demonstrated that preoperative sarcopenia was significantly associated with the occurrence of anastomotic leakage among surgical esophageal cancer patients (OR = 1.57, 95% CI: 1.29-1.90, p < 0.001). Subgroup analysis by the pathological type and definition of sarcopenia revealed similar results. However, subgroup analysis by the neoadjuvant therapy indicated that preoperative sarcopenia was only related to anastomotic leakage among patients without the history of neoadjuvant therapy (OR = 2.40. 95% CI: 1.61-3.58, p < 0.001), and sarcopenia was not a significant risk factor for anastomotic leakage in neoadjuvant therapy treated patients (OR = 1.06, p = 0.845). Preoperative sarcopenia could serve as a risk indicator in surgical esophageal cancer patients without neoadjuvant therapy.