Prognostic value of supraclavicular nodes and upper abdominal nodes metastasis after definitive chemoradiotherapy for patients with thoracic esophageal squamous cell carcinoma

The purpose of this study is to assess the prognostic value of supraclavicular nodes, left gastric nodes, celiac nodes and common hepatic nodes metastasis in esophageal squamous cell carcinoma (ESCC) treated with definitive radiotherapy. A total of 293 ESCC patients treated with radiotherapy or chemoradiotherapy entered the study. The results showed that the presence of supraclavicular nodes (χ² = 0.075, P = 0.785) and left gastric nodes (χ² = 3.603, P = 0.058) metastasis had no significant influence on survival, while celiac nodes (χ² = 33.775, P < 0.001) and common hepatic nodes (χ² = 42.350, P < 0.001) metastasis were associated with significantly shorter survival, regardless of the sites of primary tumor. Multivariate analysis showed that celiac nodes (HR: 0.457, 95% CI: 0.256-0.816; P = 0.008) and common hepatic nodes (HR: 0.241, 95% CI: 0.092-0.630; P = 0.004) metastasis were independently adverse indicator of survival in upper ESCC. While in the middle and lower ESCC, only the common hepatic nodes (middle ESCC: HR: 0.345, 95% CI: 0.161-0.738, P = 0.006; lower ESCC: HR: 0.377, 95% CI: 0.160-0.890, P = 0.026) metastasis was an independently adverse indicator of survival. In conclusion, our study demonstrated that in ESCC treated with definitive radiotherapy, both of celiac nodes and common hepatic nodes metastasis were adverse indicator of survival in upper ESCC, and common hepatic nodes metastasis were adverse indicator of survival in middle and lower ESCC. Supraclavicular nodes an left gastric nodes metastasis is not associated with patients survival in ESCC.