Figure 1.

A 56-year-old postmenopausal woman with a pathologically proven grade 3 invasive ductal carcinoma. The gray scale ultrasound feature showed a 3.34 cm, ill-defined, irregular hypoechoic mass, which was assessed as BI-RADS category 5. After applying a color overlay, SWE illustrated heterogeneous pattern with stiff rim sign. The quantitative SWE values were 194 kPa for the mean elasticity, 241 kPa for the maximum elasticity, and 33.80 for the elasticity ratio, all of which were above the corresponding cutoff values. SWE, shear wave elastography.