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Long Term Follow-up of Screening Mammography

 Mammography screening, compared with clinical breast exam, over a 5 year period did not prevent mortality after 22 years of follow up in a large Canadian study. Overdiagnosis of a clinically insignificant cancer was seen in 23 in every 10,000 screened women.

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1. Miller AB et al. BMJ 2014; 348:G366
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