Table 3 Univariate analysis in predicting axillary lymph node metastasis.

Lesion size ≥20 mm

0.334

2.321–9.115

<0.001*

Taller than wide shape

0.215

3.404–14.536

<0.001*

Rich internal flow

5.575

2.804–11.084

<0.001*

VTI score ≥5

7.772

3.772–16.015

<0.001*

Histologic grade III

0.182

11.118–62.698

<0.001*

Positive C-erbB-2

5.400

2.680–10.881

<0.001*