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Published in: Lung 5/2020

01-10-2020 | NSCLC | LUNG CANCER

Negative Lymph Node Count Predicts Survival of Resected Non-small Cell Lung Cancer

Authors: Xinyan Zhou, Chunxiao Wu, Qi Cheng

Published in: Lung | Issue 5/2020

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Abstract

Purpose

The purpose of this study was to explore the association between the negative lymph node (NLN) count and survival, as well as compare the prognostic value of the positive lymph node (PLN) count, lymph node ratio (the PLN count/total lymph nodes examined, LNR), and NLN count in patients with non-small cell lung cancer (NSCLC).

Methods

We identified patients diagnosed with NSCLC between 2005 and 2011 from the Surveillance, Epidemiology, and End Results database. Outcomes of interest were lung cancer-specific survival (LCSS) and overall survival (OS). Cases were divided into several groups based on the PLN count, NLN count, and LNR. The prognostic significance of the PLN count, NLN count, and LNR models was analyzed with the Kaplan–Meier method and the Cox regression model.

Results

39,959 patients with surgical resection for NSCLC were identified. Univariate analysis demonstrated that a greater count of NLNs was associated with better LCSS (P < 0.001) and OS (P < 0.001). Subgroup analysis showed that the NLN count could predict survival in both node-negative and node-positive patients. Multivariable analysis revealed that the NLN count was an independent prognostic factor for LCSS and OS.

Conclusion

The NLN count is an independent prognostic factor of OS and LCSS in patients with NSCLC, as well as the PLN count and LNR. The prognostic value of the PLN count, NLN count, and LNR shows no difference.
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Metadata
Title
Negative Lymph Node Count Predicts Survival of Resected Non-small Cell Lung Cancer
Authors
Xinyan Zhou
Chunxiao Wu
Qi Cheng
Publication date
01-10-2020
Publisher
Springer US
Published in
Lung / Issue 5/2020
Print ISSN: 0341-2040
Electronic ISSN: 1432-1750
DOI
https://doi.org/10.1007/s00408-020-00378-7

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