Surgical outcomes of oesophagectomy or gastrectomy due to cancer for patients ≥75 years of age: a single-centre cohort study.

Background: The increasing age of the population and prolonged life expectancy result in a widening of age limit criteria for a variety of surgical procedures. Oesophagectomy and total gastrectomy are complex operations associated with significant risks of post-operative complications.

Methods: This is a single-centre cohort study of patients operated with curative intent due to oesophageal or gastric cancer.

Results: From 2007 to 2017, 548 patients underwent surgery with curative intent, with 122 patients (22.3%) classified as elderly (≥75 years). There was no difference in total complication rates between the groups. The adjusted odds ratio for 90-day mortality after oesophageal resection in the elderly group was 3.65 (95% confidence interval (CI): 1.33-10.03) and after gastrectomy was 1.62 (95% CI: 0.55-4.79). The adjusted hazard ratio for 1-year mortality after oesophagectomy was 2.29 (95% CI: 1.25-4.19), and after gastrectomy the adjusted hazard ratio was 1.48 (95% CI: 0.75-2.92). In the event of a complication with Clavien-Dindo score IIIb or higher, there was a statistically significant increase of 90-day mortality to over 50% among elderly patients both after oesophagectomy and gastrectomy (50.0% versus 19.8%; P = 0.005 and 57.1% versus 17.4%; P = 0.012, respectively).

Conclusion: There is a statistically significant increase in 90-day mortality after oesophageal and gastric cancer surgery in elderly compared with younger patients. Post-operative complications with high Clavien-Dindo score in patients undergoing oesophagectomy or gastrectomy, with age ≥75 years, are a dramatic risk factor for post-operative death.