Ms. Tennant is a 37-year-old female with biopsy-proven DCIS and ADH of the left breast. She presents today for MR evaluation. There is heterogeneous amount of fibroglandular tissue in both breasts. There is a moderate amount of background parenchymal enhancement noted bilaterally, which limits the sensitivity of MRI.In the left upper outer breast, susceptibility artifact from biopsy marker clip is identified, at site of biopsy-proven DCIS. Seen immediately inferior to the biopsy clip artifact is linear nonmass enhancement, measuring approximately 2.2 cm in AP dimension. Note that the MR detected area of linear enhancement (2.2 cm-AP dimension) measures less than the mammographically detected area of calcifications (4.0 cm-AP dimension). There is no abnormal enhancement seen at the site of biopsy-proven ADH in the left lateral breast.No abnormal enhancement is seen in the right breast. No abnormal axillary lymph nodes are identified in either axillary region.
(1) Moderate amount of background parenchymal enhancement, which limits the sensitivity of MRI.(2) 2.2 cm linear nonmass enhancement corresponding to the site of biopsy-proven DCIS in the left breast. Note that the MR detected area of enhancement (2.2 cm-AP dimension) measures less than the mammographically detected area of calcifications (4.0 cm-AP dimension).(3) No abnormal MR enhancement at the site of biopsy-proven ADH in the left breast.(4) No MR evidence of malignancy in the right breast.BIRADS: 6 - Known cancer.RECOMMENDATION: T - Take Appropriate Action - No Letter.