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Fig. 3A —48-year-old woman with history of low-to intermediate-grade
ductal carcinoma in situ (DCIS) in left breast who was treated with lumpectomy
and radiation therapy 6 years previously. Routine mammogram (not shown)
revealed equivocal increase in 5-mm area of calcifications in treated left
upper breast. Sagittal (A) and axial (B) bilateral MR images
show area of linear clumped persistent enhancement in left upper outer
quadrant (arrows) that did not definitely correlate with mammographic
calcifications. MRI-guided core needle biopsy revealed DCIS, cribriform and
solid types, intermediate nuclear grade, associated microcalcifications, and
necrosis. Surgical excision found DCIS only.