Figure 4
Imaging findings of a luminal A invasive breast cancer of no special type in the right breast of a 45-year-old woman. (a) Right magnification view shows suspicious microcalcifcations (arrow) in the upper outer quadrant. (b) B-mode ultrasound image (left) shows a 14-mm spiculated irregular hypoechoic mass containing calcifications. Shear-wave elastography (SWE, right) values are measured, with a mean elasticity of 61.1 kPa and a maximum elasticity of 63.3 kPa. (c) Axial contrast-enhanced T1-weighted subtraction magnetic resonance imaging (MRI) shows an irregular mass with heterogenous enhancement (arrow). The mass shows early rapid and delayed plateau enhancement. (d) Axial diffusion-weighted MRI (b value, 1000 s/mm2) shows a mass with high signal intensity (arrow). (e) On the reconstructed apparent diffusion coefficient (ADC) map, the ADC value of the mass is 1.048 × 10−3 cm2/s. US-guided core-needle biopsy revealed invasive breast cancer of no special type that was estrogen receptor positive, progesterone receptor positive, and human epidermal growth factor receptor 2 positive.
