There were 51.4% of patients with no metastatic lymph node (N0), 14.3% of patients having metastatic lymph node station N1, 17.1% of patients having metastatic lymph node station N2, and 17.1% of patients having metastatic lymph node station N3.
51,4% chưa di căn hạch (N 0), 14,3% di căn hạch chặng N1, 17,1% N2 và 17,1% N 3.