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International Journal of Endocrinology
Volume 2016 (2016), Article ID 1878194, 5 pages
http://dx.doi.org/10.1155/2016/1878194
Research Article

A Study on Central Lymph Node Metastasis in 543 cN0 Papillary Thyroid Carcinoma Patients

Department of Breast-Thyroid-Vascular Surgery, Shanghai General Hospital of Nanjing Medical University, 201620 Shanghai, China

Received 7 January 2016; Revised 9 March 2016; Accepted 10 March 2016

Academic Editor: Giuseppe Damante

Copyright © 2016 Huanhuan Yan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Papillary thyroid carcinoma (PTC) with central lymph node metastases (CLNMs) is common. The objective of this study was to investigate the incidence and risk factors of lymph node metastasis patients with PTC. Patients and Methods. Between January 2013 and February 2015, a retrospective study of 543 patients with PTC undergoing hemithyroidectomy or total thyroidectomy with routine central lymph node dissection (CLND) was analyzed. Clinicopathologic risk factors for CLNM were studied using univariate and multivariate analysis by SPSS 22.0 software. Results. The incidence of CLNMs in PTC patients was 38.1% (207/543). In the multivariate analysis, male gender (, OR: 1.984), age <45 years (, OR: 1.934), bilaterality (, OR: 1.585), tumor size ≥0.25 cm (, OR: 7.655), and external extension (, OR: 7.579) were independent risk factors of CLNMs. Furthermore, in PTC patients with tumor size <0.25 cm, all 7 males and 21 patients with unilaterality were not found to have CLNMs. Conclusions. CLNMs are prevalent in the PTC patients with the following risk factors: male gender, age <45 years, bilaterality, tumor size ≥0.25 cm, and external extension. PTC patients with tumor size <0.25 cm, male patients, and patients with unilateral lesion could be considered safe from CLNMs.