71-year-old female with biopsy proven right breast DCIS (2 sites) presents for staging MRI. Breast parenchyma is almost entirely fat in both breasts.Minimal parenchymal enhancement is noted bilaterally.In the right breast, there are post-biopsy changes at middle 8:30 position, measuring 28 x 43 x 16 mm (AP x LR x CC). This area of enhancement likely contains the enhancement from residual DCIS; however, it is difficult to separate enhancement of DCIS from post biopsy changes. No other abnormal enhancement is seen in the right breast.No abnormal enhancement is seen in left breast. No abnormal lymph nodes are identified in either axillary region.
1. Post-biopsy changes in the right breast at middle 8:30 position, with probable DCIS enhancement. As the area of enhancement corresponds with the mammographic findings, bracketed needle localization under mammographic guidance can be performed.2. No MRI evidence for malignancy in the left breast or either axillaBIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.