Research Article

Clinical Characteristics Related to Central Lymph Node Metastasis in cN0 Papillary Thyroid Carcinoma: A Retrospective Study of 916 Patients

Table 2

Correlation between clinical factors and CLN metastasis: univariate analysis.

TermCervical lymph node metastasis
NegativePositiveCase number Positive rate P value

Gender0.000
 Male6312318666.13%
 Female36136973050.55%
Age (years)0.000
 ≤255455090.00%(0.000)*
 25~354611315971.07%
 35~4516116532650.61%
 45~5513311424746.15%
 55~65613910039.00%
6518163447.06%
Tumor size (cm)0.000
 ≤0.51815423522.98%(0.000)**
 0.5~1.018816435246.59%
 1.0~1.56410817262.79%
 1.5~2.021729377.42%
2.03013516581.82%
Tumor number
 Solitary 30732863551.65%0.534
 Multiple 17720538253.66%
Capsule invasion
 Absent 36328264543.72%0.000
 Present 6810817163.16%
 Extracapsular5314820173.63%
Tumor location0.000
 Lower pole1065315933.33%
 Middle pole12715227954.48%
 Upper pole689516358.28%
 Whole lobe6283482.35%  

*Age ≤ 35 years versus age 35 years.
 cm versus  cm.