Fig. 3. 45-year-old woman with breast mass.
Conventional B-mode US (A) revealed 10-mm round, hypoechoic mass with microlobulated margin in left breast (arrow). Breast imaging reporting and data assessment of B-mode US categorized it as 4a. SWE parameters were as follows: Emax, 14.5 kPa; Eratio, 2.59 (B); and SMIVI, 0% (C). Considering that all quantitative parameters were less than cutoff values, final category was downgraded to 3. US-guided core needle biopsy revealed this lesion as fibroadenoma.