A dense breast can obscure a cancer. CC and MLO views (panels A and B) in a woman with a palpable breast lump show dense breast parenchyma. No discrete mass or calcifications are seen. A sagittal post contrast MR image (panel C) in the same breast shows multiple enhancing masses (arrows) involving the upper half of the breast worrisome for malignancy. Ultrasound-guided biopsy revealed invasive ductal cancer. If there is a clinical suspicion for cancer, a negative mammogram should not stop further intervention.
CC: craniocaudal; MLO: mediolateral oblique; MR: magnetic resonance.
Graphic 54454 Version 8.0
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