Figure 3
Imaging findings of triple-negative invasive breast cancer of no special type in the left breast of a 67-year-old woman. (a) Images obtained with mammography in the left mediolateral oblique (left) and left craniocaudal view (right) shows an irregular hyperdense mass (arrows) in the upper outer breast. (b) B-mode ultrasound image (left) shows a 22-mm microlobulated heterogenous mass with posterior enhancement. Shear-wave elastography (SWE, right) values are measured, with a mean elasticity of 194.5 kPa and a maximum elasticity of 207.7 kPa. (c) Axial contrast-enhanced T1-weighted subtraction magnetic resonance imaging (MRI) shows a round mass with rim enhancement (arrow). The mass shows early rapid and delayed washout enhancement. (d) Axial diffusion-weighted MRI (b value, 1000 s/mm2) demonstrates a mass with high signal intensity (arrow). (e) On the reconstructed apparent diffusion coefficient (ADC) map, the ADC value of the mass is 0.965 × 10−3 cm2/s. US-guided core-needle biopsy revealed invasive breast cancer of no special type that was estrogen receptor negative, progesterone receptor negative, and human epidermal growth factor receptor 2 negative.
