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BACKGROUND As ductal carcinoma in situ (DCIS) is a risk factor for invasive breast cancer, ongoing annual mammography is important for cancer control, yet little is known about racial/ethnic and other disparities in use among older women with DCIS. METHODS SEER-Medicare data was used to identify women age 65–85 years, diagnosed with DCIS from 1992 to 2005 and treated with surgery, but not bilateral...
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