Fig. 2
Images of a 59-year-old woman with invasive ductal carcinoma without lymphovascular invasion. a Diffusion-weighted image demonstrates homogeneous high signal intensity of mass without rim sign (b value=1000 s/mm2). b Apparent diffusion coefficient map. Multiple region of interests (ROI)s of 7.81 mm2 were manually placed within the mass avoiding cystic or necrotic area. Minimum ADC value was 826 × 10−6 mm2/s, and maximum ADC value was 1069 × 10−6 mm2/s. The calculated ADC difference was 243 × 10−6 mm2/s. c, d Axial contrast-enhanced T1-weighted image after 2 min (c) and 6 min (d) of contrast injection demonstrating an oval, circumscribed mass with homogeneous enhancement in her right breast. Kinetic analysis of enhancement pattern was washout pattern. This patient underwent modified radical mastectomy. The histopathological features of this mass were moderate differentiated, no lymph node metastasis, ER-, PR-, HER2+, and Ki-67 high (20%). Tumor size at final pathologic report was 1.6 cm