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Fig. 1A —70-year-old woman with recent (< 6 months previously) diagnosis of atypical lobular hyperplasia by stereotactic biopsy of right breast calcifications. Bilateral MRI was performed to rule out occult malignancy. In this and all subsequent figures, sagittal image is from first run of dynamic contrast-enhanced series, and axial image is from delayed contrast-enhanced series. Sagittal (A) and axial (B) T1-weighted fat-suppressed 3D fast spoiled gradient-recalled echo images after contrast injection show 1.5-cm area of ductal and clumped enhancement (arrows) in contralateral breast, with persistent enhancement kinetics and no mammographic correlate. MRI-directed core biopsy followed by excision revealed ductal carcinoma in situ, cribriform and solid types, intermediate nuclear grade, with central necrosis.