48-year-old with known left breast cancer who is receiving neoadjuvant chemotherapy presents for ultrasound study to evaluate the response. Focused ultrasound of the left breast tumor is performed. Again visualized is an irregularly shaped hypoechoic mass with increased vascularity measuring 19 x 15 x 14 mm (previously 47 x 26 x 43 mm) at 2:00 position, 8 cm from the nipple.
Decrease in size of the known cancer in the left breast. BIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.