Figure 2From: Does recurrent laryngeal nerve lymph node metastasis really affect the prognosis in node-positive patients with squamous cell carcinoma of the middle thoracic esophagus? Survival curves of patients with various number of metastatic nodes (without lymph node metastasis vs. with ≤ 6 metastatic nodes, P < 0.001; with ≤ 6 metastatic nodes vs. with ≥ 7 metastatic nodes, P < 0.001; without lymph node metastasis vs. with ≥ 7 metastatic nodes, P < 0.001). Back to article page