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Figure 1b. Mammograms in a 38-year-old woman with a lump at the 4-o’clock position in the right breast. (a) Craniocaudal and (b) mediolateral oblique mammograms of both breasts. The glandular tissue was considered to be of high density, without a focal abnormality in the area of clinical concern. The pathologic diagnosis was high-grade DCIS.