Predictive factors of rⅥb metastasis and the correlation between rⅥa and rⅥb metastasis in papillary thyroid microcarcinoma
Abstract：Objective To investigate the predictive factors of lymph node metastasis of deep surface (r Ⅵ b) of the right recurrent laryngeal nerve (rRLN) in papillary thyroid microcarcinoma (PTMC)patients,and the correlation between rRLN superficial surface (r Ⅵ a) and r Ⅵ b lymph node metastasis in the patients.Methods Based on metastasis in rⅥb,772 PTMC patients admitted in the First Affiliated Hospital of Kunming Medical Universityfrom July 2013 to June 2016 were divided into two groups.x 2test and multivariate logistic regression were used to analyze the risk factors of rⅥb metastasis.Results The rⅥb metastasis rate was 7.1％ (55/772).Univariate analysis showed that the factors that correlated with r Ⅵ b metastasis were gender,age,tumor size,tumor location,extrathyroid invasion,metastasis of left central area + rⅥ a,lateral lymph node metastasis (LLNM),combined with nodular goiter,the right tumor location,r Ⅵ a lymph node metastasis,and metastasis number and ratio.Multivariate analysis showed that male,extrathyroid extension,r Ⅵ a metastasis,LLNM and right tumor region were independent predictive factors of r Ⅵ b.Conclusion Clinical and pathological factors have certain predictive value for Ⅵa metastasis of PTMC.The risk of lymph node metastasis in r Ⅵ b was increased by 8.4 times and by 10.9 times when the metastatic lymph node ≥2 and metastasis ratio of rⅥa was ＞ 60％ respectively.Patients with high risk in rⅥb should be chosen for more complete rⅥb including central lymph node dissection.
Keywords：papillary thyroid microcarcinomadeep lymph nodes of recurrent laryngeal nervecentral lymph node dissectionr Ⅵ b lymph node metastasis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1007-1012 )