40-year-old female with history of bilateral benign biopsies in 2000 and 2014. No current breast complaints Three standard views of both breasts were performed digitally and reviewed with the aid of R2 CAD 9.3. The breast parenchyma is extremely dense, which lowers the sensitivity of mammography.Linear scar markers overlie both breasts. There are multiple bilateral asymmetries with scattered areas of calcification in the left upper central breast posteriorly. Given the extremely dense breast tissue, screening bilateral whole breast ultrasound both breasts was subsequently performed.Ultrasound of the right breast demonstrated a circumscribed, parallel hypoechoic mass without significant vascularity measuring 1.3 x 0.7 x 1.1 cm at the 12:00 position, 3 cm from the nipple.Ultrasound of the right breast demonstrated a circumscribed, parallel hypoechoic mass without significant vascularity measuring 0.9 x 0.5 x 0.8 cm at the 4:00 position, 3 cm from the nipple.Ultrasound of the left breast demonstrated 2 adjacent circumscribed, parallel hypoechoic masses without significant vascularity measuring 1.0 x 0.7 x 1.1 cm and 0.5 x 0.3 x 0.8 cm at the 10:00 position, 6 cm from the nipple.
Multiple bilateral circumscribed masses likely represent fibroadenomas. Recommend 6 month follow-up ultrasound to document stability.BIRADS: 3 - Probably benign finding.RECOMMENDATION: 3B - Followup at Short Interval (1-11 Months).