Some images of lung cancer are clear cut. But in many others, a nodule on the screen turns out not to be cancer at all. iStockphoto.com hide caption

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Panel Urges Lung Cancer Screening For Millions Of Americans

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Doreen Ramogola-Masire, an obstetrician-gynecologist in Botswana, hopes that a simple, quick screen for cervical cancer with vinegar will catch the disease early and save women's lives. Jason Beaubien/NPR hide caption

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Botswana Doctors Stop Cervical Cancer With A Vinegar Swab

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Before the colonoscopy begins, it pays to ask your doctor some pointed questions. Sebastian Schroeder/iStockphoto.com hide caption

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Cells gathered during a Pap test. Those on the left are normal, and those on the right are infected with human papillomavirus. Ed Uthman/Wikimedia Commons hide caption

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Doctors Revamp Guidelines For Pap Smears

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