Clinical outcomes of oesophagectomy in elderly versus relatively younger patients: a meta-analysis

OBJECTIVES: The surgical efficacy of oesophagectomy for elderly patients (>80 years old) is still unclear. The aim of this meta-analysis was to compare the clinical outcomes of oesophagectomy between elderly and relatively younger patients. METHODS: PubMed, EMBASE and the Cochrane Library were searched for relevant studies comparing the clinical outcomes of oesophagectomy for elderly and relatively younger patients. Odds ratios were extracted to obtain pooled estimates of the perioperative effect, and hazard ratios were extracted to compare survival outcomes between the 2 cohorts. RESULTS: Nine studies involving 4946 patients were included in this meta-analysis. For patients older than 80 years of age, in-hospital mortality [odds ratio (OR) 2.00, 95% confidence interval (CI) 1.28-3.13; P = 0.002] and the incidence rates of cardiac (OR 1.55, 95% CI 1.10-2.20; P = 0.01) and pulmonary (OR 1.57, 95% CI 1.11-2.22; P = 0.01) complications were higher than those of relatively younger patients. The overall postoperative complication rate (OR 1.40, 95% CI 0.82-2.40; P = 0.22) and the incidence of anastomotic leak (OR 0.92, 95% CI 0.58-1.47; P = 0.73) were not significantly different between the 2 groups. Elderly patients had a worse overall 5-year survival rate (HR 2.66, 95% CI 1.65-4.28; P < 0.001) than that of relatively younger patients. The cancer-related 5-year survival rate of elderly patients was also lower than that of relatively younger patients (HR 3.37, 95% CI 2.36-4.82; P < 0.001). CONCLUSIONS: Compared with relatively younger patients, elderly patients with oesophageal cancer undergoing oesophagectomy are at higher risk of in-hospital mortality and have lower survival rates. However, there is no conclusive evidence that the overall rate of complications is elevated in elderly patients.