Oncotarget

Clinical Research Papers:

Metastatic to negative lymph node ratio demonstrates significant prognostic value in patients with esophageal squamous cell carcinoma after esophagectomy

Xiao-Feng Duan, Peng Tang, Xiao-Bin Shang, Hong-Jing Jiang and Zhen-Tao Yu _

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Oncotarget. 2017; 8:86908-86916. https://doi.org/10.18632/oncotarget.19673

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Abstract

Xiao-Feng Duan1, Peng Tang1, Xiao-Bin Shang1, Hong-Jing Jiang1 and Zhen-Tao Yu1

1Department of Esophageal Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin City, Clinical Research Center for Cancer of Tianjin City, Tianjin, China

Correspondence to:

Zhen-Tao Yu, email: [email protected]

Keywords: esophageal squamous cell carcinoma, esophagectomy, lymph node ratio, MNLNR, prognosis

Received: April 07, 2017    Accepted: May 16, 2017    Published: July 28, 2017

ABSTRACT

Aims: The prognostic value of metastatic lymph node ratio (LNR) has been reported in some studies; however, there is no report on the prognostic significance of metastatic to negative lymph node ratio (MNLNR) in cancer patients. The aim of this study was to compare the prognostic value of pN, LNR and MNLNR on the survival of patients with esophageal squamous cell carcinoma (ESCC) after esophagectomy.

Methods: The data of 290 patients with ESCC after curative esophagectomy was retrospectively analyzed. The optimal cut-point for LNR and MNLNR were set as 0, 01-0.2, and >0.2. Univariate and multivariate analyses were performed to identify prognostic factors for overall survival (OS).

Results: Patients classified as LNR 0, 0.01-0.20, and 0.21-1.0, the observed 5-year OS rates were 46.6%, 26.0%, and 11.6%, respectively (P = 0.000). Patients classified as MNLNR 0, 0.01-0.20, and >0.2, the observed 5-year OS rates were 46.6%, 31.2%, and 7.4%, respectively, respectively (P = 0.000). The pN stage, LNR or MNLNR category was confirmed as a significant independent prognostic factor, respectively (P = 0.032, P = 0.011 and P = 0.003, respectively); However, only the MNLNR category (P = 0.003) remained as a significant prognostic factor when the pN stage, LNR and MNLNR category simultaneously included in the multivariate analysis models.

Conclusions: The MNLNR was recognized as an independent prognostic factor in ESCC patients after curative esophagectomy. In addition, MNLNR showed better prognostic value than pN stage and LNR category.


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