Word: mammogram
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Dates: during 1990-1999
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...question is why. Most experts on the disease agree that part of the increase can be attributed to earlier detection of tumors. Some 65% of American women over 40 have had a mammogram, up from about 20% in 1979. The widespread use of this tool, a low-dose X ray of the breasts, has meant that more women are discovering their tumors in the early stages, before a lump can be felt. In past decades, prior to the spread of mammography, such women might have died of other causes before their breast cancer was diagnosed...