59-year-old female with status post left lumpectomy for invasive ductal carcinoma at outside institution. Preoperative mammograms showed an indeterminate focal asymmetry posterior to the known cancer. Breast parenchyma is almost entirely fat in both breasts.Mild parenchymal enhancement is noted bilaterally.Postoperative seroma cavity is seen at anterior upper outer quadrant in the left breast, measuring 47 x 40 x 29 mm (AP x LR x CC). There are small areas of enhancement at anteromedial and posterolateral borders of the seroma, likely postsurgical changes. No suspicious enhancement is seen around the seroma.There is a nonenhancing mass, measuring 14 mm in AP direction, located posterior to the seroma, likely corresponding to the focal asymmetry in question on the prior mammogram. As there is no enhancement in this mass, this is considered a benign lesion.No abnormal enhancement is seen in right breast. No abnormal lymph nodes are identified in either axillary region.
No MRI evidence for malignancy in either breast. Status post lumpectomy in the left breast for invasive ductal carcinoma. A small focal asymmetry posterior to the known cancer seen on the outside mammogram corresponded to a benign non-enhancing mass on the current MRI.BIRADS: 2 - Benign finding.RECOMMENDATION: X - No Letter.