Short- and Long-Term Outcomes after Laparoscopic Versus Open Gastrectomy for Elderly Gastric Cancer Patients: A Systematic Review and Meta-Analysis.

Abstract

Background: With the rapid aging of global population, the number of elderly patients with gastric cancer is increasing. This study aimed to evaluate short- and long-term outcomes after laparoscopic gastrectomy (LG) versus open gastrectomy (OG) in elderly gastric cancer patients. Materials and Methods: We searched PubMed, EMBASE, and the Cochrane library databases from January 1994 to May 2019. Surgical safety, postoperative complications, number of harvested lymph nodes, and overall survival rate were included and analyzed. The qualities of the included studies were evaluated by Newcastle-Ottawa Quality Assessment Scale. The evidence of outcomes was evaluated using the GRADE approach. The Review Manager® 5.3 (Cochrane, London, UK) and Stata® 14.0 (StataCorp., College Station, Texas) were used to analyze the outcomes. Results: Thirteen studies containing 4768 elderly patients with gastric cancer were included in this meta-analysis. LG was more favorable than OG in terms of overall postoperative morbidity (odds ratio [OR]: 0.56; 95% confidence interval [CI]: 0.44 to 0.70; P < .00001), the postoperative stay (standardized mean difference [SMD]: -0.56; 95% CI: -0.76 to (-0.37); P < .00001), and the number of harvested lymph nodes (SMD: 0.19; 95% CI: 0.09 to 0.29; P = .0003). No significant difference was found in anastomotic leakage rate (OR: 0.82; 95% CI: 0.59 to 1.12; P = .21), mental disease (OR: 0.79; 95% CI: 0.44 to 1.44; P = .44), or overall survival rate (P = .62) between two groups. However, in the subgroup with a cutoff age of 80 years, the anastomotic leakage rate was higher in LG (OR: 10.27; 95% CI: 1.31 to 80.35; P = .03). Conclusions: LG was more favorable than OG in the elderly patients <80 years old with gastric cancer.