56 year old with known right breast cancer undergoing neoadjuvant chemotherapy presents for evaluation of chemo effect. There is scattered fibroglandular tissue in both breasts.Mild parenchymal enhancement is noted bilaterally.Right Breast: The index cancer in the right breast at 10:00 position measures 12 x 17 x 15 mm (AP x LR x CC, previously 29 x 26 x 33 mm). A possible satellite located medially from the index mass on the prior study is no longer visualized. Total extent of the non-mass enhancement extending from the index mass to the nipple measures 67 x 32 x 22 mm (previously 70 x 45 x 53 mm).Left Breast: There are no areas of abnormal enhancement in the left breast.Axilla: No abnormal lymph nodes are identified in either axillary region.
Decrease in size of the biopsy proven cancer and possible satellite in the right breast.BIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.