Long-term outcomes and prognostic factors with non-curative endoscopic submucosal dissection for gastric cancer in elderly patients aged ≥ 75 years.

Background: Little is known about the long-term outcomes and prognostic factors with non-curative endoscopic submucosal dissection (ESD) in elderly patients with early gastric cancer.
Methods: Clinicopathological findings and long-term outcomes were evaluated in 87 patients with early gastric cancer (EGC) aged ≥ 75 years who were treated with non-curative ESD. Prognostic factors for overall survival (OS) were analyzed with the Kaplan-Meier method and a Cox proportional hazards model.
Results: During the follow-up period, among 27 patients who died of any cause, only one patient died of gastric cancer. OS probabilities after 3 and 5 years were 89.7% and 79.3%, respectively. Univariate analyses revealed that Eastern Cooperative Oncology Group performance status 2-3, Charlson comorbidity index (CCI) ≥ 3, neutrophil/lymphocyte ratio ≥ 3.3, prognostic nutritional index < 44.8, distal tumor location and macroscopically depressed or flat configuration were associated with poor OS. Cox multivariate analysis revealed high CCI (≥ 3) to be an independent prognostic factor associated with OS (hazard ratio: 2.63, 95% confidence interval [CI] 1.06-6.49, P = 0.037).
Conclusions: CCI may be a useful parameter for decision-making regarding additional surgery for elderly patients with gastric cancer treated by non-curative ESD.