Effects of extended lymphadenectomy and postoperative chemotherapy on node-negative gastric cancer

Figure 1 Five-year survival curve for patients with N0 gastric cancer according to the number of resected lymph nodes. A: In ≥ 65 years group, survival curve for 155 patients with N0 gastric cancer according to the number of resected lymph nodes (15-24 and ≥ 25); B: In tumor size > 4 cm group, survival curve for 145 patients with N0 gastric cancer according to the number of resected lymph nodes (15-24 and ≥ 25); C: In the upper location group, survival curve for 103 patients with N0 gastric cancer according to the number of resected lymph nodes (15-24 and ≥ 25); D: In pT3 group, survival curve for 220 patients with N0 gastric cancer according to the number of resected lymph nodes (15-24 and ≥ 25).

Figure 2 Five-year survival curve for patients with N0 gastric cancer according to whether patients received postoperative chemotherapy. A: In ≥ 65 years group, survival curve for 155 patients with N0 gastric cancer according to whether patients received postoperative chemotherapy; B: In tumor size > 4 cm group, survival curve for 145 patients with N0 gastric cancer according to whether patients received postoperative chemotherapy; C: In the upper location group, survival curve for 103 patients with N0 gastric cancer according to whether patients received postoperative chemotherapy; D: In pT3 group, survival curve for 220 patients with N0 gastric cancer according to whether patients received postoperative chemotherapy.