Fig 1.
Tumor size and distance from capsule.
Measurement of tumor size (dotted line) and distance from capsule (double headed arrow) on ultrasonography images.
Table 1.
Clinicopathological characteristics of the study patients.
Fig 2.
Tumor size and the distance from capsule on ultrasonography images.
Tumors with capsule invasion are shown separately.
Table 2.
Central lymph nodal status according to capsule invasion on ultrasonography.
Table 3.
Central lymph nodal status of the tumor without capsule invasion according to age, gender, and ultrasonographic findings.
Table 4.
Multivariate analysis of factors associated with central lymph node metastasis.