Here's more evidence that mammograms don't always deliver the results that women want. They find more small cancers, but don't lower a woman's risk of dying of breast cancer, a study finds.
The study looked at data from 547 counties that reported the percentage of women over age 40 who had a screening mammogram between 1998 and 2000. More than 16 million women lived in those counties, and 53,207 were diagnosed with breast cancer in 2000.
Over the next 10 years, 15 percent of the women died of breast cancer.