Mammography detects cancer, but debate rages over when and how often women should get screened. hide caption

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Sally O'Neill decided to have a double mastectomy rather than "do a wait-and-see." Richard Knox/NPR hide caption

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The Susan Komen for the Cure Foundation is pulling back from some high-profile fundraising walks. LM Otero/AP hide caption

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Angelina Jolie's decision to have a double mastectomy after genetic testing has prompted a discussion about which other tests should be covered. WPA Pool/Getty Images hide caption

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In sharing her decision to have a double mastectomy, Angelina Jolie has given voice to a dilemma more women are facing. Carlo Allegri/AP hide caption

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Actress Angelina Jolie at a news conference with Secretary of State John Kerry (in background) and other foreign ministers in London last month. They held a forum on how to reduce sexual violence against women in conflict zones — an issue she has often spoken about. Alastair Grant /PA Photos /Landov hide caption

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Betty Daniel gets a routine yearly mammogram from mammography tech Stella Palmer at Mount Sinai Hospital in Chicago in 2012. Heather Charles/MCT/Landov hide caption

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