Fig. 2From: Prognostic significance of 4R lymph node dissection in patients with right primary non-small cell lung cancerDissection rate (A) and metastasis rate (B) of each lymph node station. Distribution of lymph node involvements in patients with N2 disease and station 4R (C) or 7 (D) metastasis. Chi-square analysis was used to compare the dissection or metastasis rates between subgroups. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page