A retrospective study on the prognostic value of preoperative neutrophil/lymphocyte ratio in patients with primary small-cell carcinoma of the esophagus
Authors Wang Y, Liu JF
Received 23 June 2016
Accepted for publication 14 January 2017
Published 5 May 2017 Volume 2017:10 Pages 2453—2459
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Ru Chen
Peer reviewer comments 2
Editor who approved publication: Dr Samir Farghaly
Yan Wang, Jun Feng Liu
Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
Introduction: There is increasing evidence that systemic inflammation influences the prognosis in patients with malignant tumors. The aim of this research was to investigate the prognostic value of neutrophil/lymphocyte ratio (NLR) in patients with primary small-cell carcinoma of the esophagus.
Methods: This study retrospectively analyzed 129 patients with primary small-cell carcinoma of the esophagus who underwent esophagectomy in The Fourth Hospital of Hebei Medical University between January 2008 and December 2010. NLRs were calculated by using the following formula: peripheral neutrophil count/lymphocyte count (109/L). Correlations of NLR with other clinicopathologic data and prognosis were analyzed. The survival rate was calculated by Kaplan–Meier analysis. The differences between groups were compared by using the log-rank test. Cox regression was used to analyze the factors that may affect the survival of the patients.
Results: The survival rate was found to be related to tumor stage, tumor location, nodal metastasis, TNM stage, histology, adjuvant therapy, and NLR (all P<0.05). High-NLR group had significantly poorer survival than low-NLR group (1-, 3-, and 5-year survival rates: 46.6% vs 57.1%, 21.9% vs 50.0%, and 5.5% vs 23.2%, respectively, P=0.002). NLR was identified as an independent prognostic factor for patients with primary small-cell carcinoma of the esophagus.
Conclusion: NLR is a valuable clinical marker in preoperative estimation as well as prognosis prediction for patients with primary small-cell carcinoma of the esophagus.
Keywords: neutrophil/lymphocyte ratio, primary small-cell carcinoma of the esophagus, surgery, prognosis
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