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Figure 1c. (a) Sagittal fat-suppressed contrast-enhanced three-dimensional fast spoiled gradient-recalled-echo MR image (15/2.2) demonstrates an enhancing 1-cm mass (arrow) with spiculated margins. (b) Sagittal fat-suppressed contrast-enhanced three-dimensional fast spoiled gradient-recalled-echo MR images (9.2/2.2) obtained during MR imaging-guided localization. The arrow in the image on the left marks the lesion. The arrow in the image on the right marks the artifact from the needle. (c) Postlocalization mediolateral mammogram reveals the hook wire in the central part of the breast and a skin marker (metallic bead). Scattered calcifications adjacent to and distant from the wire were present in both breasts and were stable. Excisional biopsy revealed a 6-mm infiltrating ductal carcinoma with associated ductal carcinoma in situ and extensive lymphatic invasion. On the basis of the histopathologic features, mastectomy was recommended. At mastectomy, minimal residual invasive ductal carcinoma and ductal carcinoma in situ were identified near the biopsy site. No other tumor was found in the breast.