37 year old with biopsy proven IDC with proven satellite lesion in the left breast and metastatic left axillary lymph node presents for staging MRI. There is scattered fibroglandular tissue in both breasts.Mild parenchymal enhancement is noted bilaterally.LEFT BREAST:The biopsy proven cancer is present at posterior 1 o'clock position as an irregularly shaped mass, measuring 102 x 86 x 98 mm (AP x LR x CC). There is an additional mass, which is a proven satellite lesion, measuring 30 x 44 x 32 mm, at postero-lateral-inferior from the main mass. Overall measurement on AP dimension of the main tumor and satellite tumor is 122 mm.Diffuse edema and diffuse skin thickening is noted in the left breast.LEFT AXILLA:There is an enlarged lymph node with internal marker clip in the left axilla. This is a proven metastatic lymph node. In addition, there are a few smaller, but abnormal lymph nodes in the left axilla.RIGHT BREAST:No abnormal enhancement is seen in right breast. RIGHT AXILLA:No abnormal axillary lymph nodes are identified in right axillary region.
1. Biopsy proven cancer and satellite tumor in the left breast with metastatic left axillary lymph node.2. No MR evidence of malignancy in the right breast or in the right axilla.BIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.