47 year old with biopsy proven DCIS grade 3 in the left breast, presents for MRI study. There is scattered fibroglandular tissue in both breasts.Marked parenchymal enhancement is noted bilaterally, limiting the sensitivity of MRI.In the left breast at middle to posterior 2:00 - 3:00 position, there is a segmental non mass enhancement, measuring 84 x 37 x 25 mm (all measurements: AP x LR x CC), corresponding to the proven DCIS. Within the non mass enhancement, there is a lobulated hematoma (25 x 20 x 23 mm), and a marker clip artifact within the hematoma.At the left anterior 12:00 position, there is another suspicious non mass enhancement, measuring 31 x 28 x 21 mm. On the mammogram, there are amorphus calcifications at the corresponding site (superior retroareolar region). Overall AP distance including main non mass enhancement and anterior non mass enhancement is 119 mm.A few normal intramammary lymph nodes are present in the right lateral breast.No abnormal enhancement is seen in right breast. No abnormal lymph nodes are identified in either axillary region.
Large area of non mass enhancement in the left upper outer breast, including the site of proven DCIS.BIRADS: 6 - Known cancer.RECOMMENDATION: X - No Letter.