Survival curves for GC patients categorized by curability and 14v dissection (14vD) status. The 3-year OS was 32.0% for 14v un-dissected patients with R0 resection and 29.2% for R1 resection patients (regardless of 14v dissection), respectively (P=0.084, R0 resection without 14v dissection vs. R1 resection regardless of the status of 14v dissection, log-rank test). GC, gastric cancer; OS, overall survival.