Table 3 shows the results of the univariate and multivariate analyses of the potential risk factors for patients with No. 10 LN metastasis. Three factors were associated with an increased risk of No. 10 LN metastasis, including preoperative tumor size, preoperative T stage, and preoperative N stage (P < 0.003). The results of the multivariate analysis identified preoperative tumor size (P = 0.006), preoperative T stage (P = 0.001), and preoperative N stage (P = 0.029) as adverse risk factors for No. 10 LN metastasis. We divided the cases into 2 groups according to the tumor size (≥5 cm, <5 cm). The No. 10 LN metastasis rate for each subgroup is shown in Table 4.