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

Table 1

Patient demographics and clinical characteristics.

Term	Case number	Percent
Gender
Male	186	20.31%
Female	730	79.69%
Age (years)
≤25	50	5.46%
25~35	159	17.36%
35~45	326	35.59%
45~55	247	26.97%
55~65	100	10.92%
65	34	3.71%
Caspsule invasion
Absent	645	63.42%
Present	171	16.81%
Extracapsular	201	19.77%
Tumor number
Solitary	635	62.44%
Multiple	382	37.56%
Tumor size (cm)
≤0.5	235	23.11%
0.5~1.0	352	34.61%
1.0~1.5	172	16.91%
1.5~2.0	93	9.14%
2.0	165	16.22%
Tumor location
Lower pole	159	25.04%
Middle pole	279	43.94%
Upper pole	163	25.67%
Whole lobe	34	5.35%