Fig. 2From: Lymph node ratio as a prognostic factor in patients with pathological N2 non-small cell lung cancerOverall survival rate for patients with N2 non-small cell lung cancer depends on clinical lymph node status (cN) and lymph node ratio (LNR). cN0 and LNR ā¤0.22 (black line). cN0 and LNR >0.22, or cN1-2 and LNR ā¤0.22 (black dashed line). cN1-2 and LNR > 0.22 (gray line)Back to article page