The prognostic value of metastatic lymph node number and ratio in oesophageal squamous cell carcinoma patients with or without neoadjuvant chemoradiation

European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery
Hung-Che ChienChia-Chuan Liu

Abstract

We aim to evaluate the prognostic value of metastatic lymph node number (MLN) and ratio (MLR) in oesophageal squamous cell carcinoma (OSCC) patients with or without neoadjuvant chemoradiation. Two thousand one hundred and fifty-one OSCC patients receiving oesophagectomy with (n = 850) or without (n = 1301) neoadjuvant chemoradiation were included. The MLN was categorized into 0 (N0), 1-2 (N1), 3-6 (N2) and more than 7 (N3); the MLR was categorized into 0, 0-0.2 and >0.2. The prognostic value was evaluated with survival analysis using the Cox proportional hazards regression model and the Kaplan-Meier method. In patients without neoadjuvant chemoradiation, the 3-year overall survival rates were 54.8, 34.4, 21.8 and 6.5% with MLN = 0, 1-2, 3-6 and more than 7, respectively (P < 0.001). The 3-year overall survival rates were 54.7, 31.2 and 14.2% with MLR = 0, 0-0.2 and more than 0.2, respectively (P < 0.001). In patients with neoadjuvant chemoradiation, the 3-year overall survival rates were 49.0, 28.4, 12.5 and 0.0% with MLN = 0, 1-2, 3-6 and more than 7, respectively (P < 0.001). However, the survival curves of MLN = 3-6 and MLN ≥7 overlapped on the Kaplan-Meier plots. In contrast, MLR demonstrated good ability to show the surviv...Continue Reading

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