31-year-old female with cystic fibrosis on lung transplant list. Asymmetry seen on screening mammogram. Right breast lumpectomy performed eight years ago. MAMMOGRAM:CC and ML viewsas well as two spot compression views of left 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(BiRads Density Category D), unchanged in pattern and distribution. The previously seen circumscribed asymmetry in the lower inner left breast appears to persist on the CC view. No new asymmetries or suspicious microcalcifications are present.ULTRASOUND:On physical examination, no concerning lesion is palpated.A targeted left ultrasound was performed for the mammographic area of concern. There is a 5 x 3 x 4 mm multiseptated hypoechoic cystic lesion in the 9:00 position 2 cm from the nipple in the left breast consistent with a septated cyst. There is an additional well-circumscribed 4 x 4 x 6 cm hypoechoic lesion in the 6:00 position in the left breast, 2 cm from the nipple, which is consistent with a simple cyst.
Ultrasound revealed a septated cyst at the 9:00 position, corresponding to the circumscribed asymmetry seen on the mammogram. No further follow-up is recommended at this time unless clinically indicated.BIRADS: 2 - Benign finding.RECOMMENDATION: X - No Letter.