57 year old female with multifocal invasive cancer of the right breast, undergoing neoadjuvant chemotherapy. History of left mastectomy in 1998. Status post left mastectomy and bilateral retropectoral silicone implants.There is scattered fibroglandular tissue in the right breast.Mild parenchymal enhancement is noted in the right breast.Silicone implants appear intact bilaterally.There are two irregularly-shaped enhancing masses in the right breast, consistent with proven carcinoma. The larger mass is located at 3 o'clock position, measuring 23 x 32 x 27 mm (all measurements: AP x LR x CC), and the smaller mass is located at 9 o'clock position, measuring 17 x 21 x 21 mm. Surrounding these two masses, there is an extensive non-mass enhancement, measuring 48 x 70 x 69 mm, predominantly in the lower half, but extending all four quadrants of the right breast.No abnormal enhancement is seen in left post-mastectomy breast. No abnormal lymph nodes are identified in either axillary region.
1. Known right multicentric cancer.2. No MRI evidence for malignancy in the left post-mastectomy breast.3. No abnormal lymph nodes in either axillary region.BIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.