Aside from prevention, early detection of cancer is the most effective way of fighting it. Last week, citing studies on the costs, risks and benefits of screening tests, as well as new information about how the disease develops, the American Cancer Society announced major changes in its cancer checkup recommendations to the public. Among them:
> For women between 20 and 65 (and those under 20 who are sexually active), the Pap test for cervical cancer need be done only once every three years (after two negative tests a year apart), instead of once a year.
> Women should have breast X...
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