43-year-old with left breast invasive ductal carcinoma status post chemotherapy presents for bilateral breast MRI to assess treatment response. There is heterogeneous amount of fibroglandular tissue in both breasts.Mild parenchymal enhancement is noted bilaterally.LEFT BREAST: Redemonstrated is a rim-enhancing mass with irregular margins and associated clip artifact in the left breast 11:00 position, posterior depth, measuring 14 x 11 x 12 mm (previously 14 x 11 x 12 mm), consistent with the biopsy-proven cancer. There is a subcentimeter cyst in the left breast 12:00 position which demonstrates mild peripheral enhancement. This appearance was similarly seen in some of her cysts on the initial staging MRI and is benign. There is no additional suspicious enhancing mass or focus of enhancement in the left breast or left axilla region.RIGHT BREAST: No abnormal enhancement is seen in the right breast or right axillary region.
No change in size of left breast cancer measuring 14 x 11 x 12 mm.BIRADS: 6 - Known cancer.RECOMMENDATION: T - Take Appropriate Action - No Letter.