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Fig. 4A —Asymptomatic 62-year-old woman with history of right ductal carcinoma in situ (DCIS) 4 years earlier. Left craniocaudal view shows questionable retroareolar distortion. No microcalcification is identified. Breast sonogram (not shown) revealed vague, but real, ill-defined hypoechoic and attenuating area measuring approximately 1 cm at 12-o'clock position.