Known left triple negative breast cancer on research protocol for I-Spy 2. MRI #3 There is heterogeneous amount of fibroglandular tissue in both breasts. Mild parenchymal enhancement is noted bilaterally.LEFT BREAST: In the left upper outer breast, there has been an interval decrease in size of known malignancy, now measuring 4.7 x 1.8 x 1.2 cm previously 5.3 x 3.5 x 3.1 cm (AP x ML x SI), and originally 7.4 x 3.9 x 6.0 cm. The degree of enhancement is significantly decreased and just above the level of background parenchyma. Susceptibility artifact from biopsy marker clip is seen within the central aspect of this malignancy. There is no additional abnormal enhancement identified in the left breast.There is continued interval decrease in the lymph nodes in the left axilla and normalization of their morphology, with the reference node now measuring approximately 1.2 cm, previously 2.4 cm, and originally 3.6 cm. Susceptibility artifact from biopsy marker clip is seen within one of these lymph nodes, compatible with biopsy-proven metastatic left axillary lymph node.RIGHT BREAST: No abnormal enhancement is seen in the right breast.No abnormal axillary lymph nodes are identified in the right axillary region. .
(1) Interval decrease in size and degree of enhancement of the biopsy proven malignancy of the left breast. Continued decrease in size of metastatic left axillary lymph nodes. (2) No MRI evidence of malignancy in the right breast. BIRADS: 6 - Known cancer.RECOMMENDATION: T - Take Appropriate Action - No Letter.