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Commentaries question benefit of early screening.
2003 NOV 6 - (NewsRx.com & NewsRx.net) -- A series of three commentaries in the October 15, 2003, issue of the Journal of the National Cancer Institute addresses the issue of whether premenopausal women are being accurately informed about the potential harms versus benefits of mammography before undergoing screening.
In the first commentary, Cornelia J. Baines, MD, of the University of Toronto, notes that randomized trials of breast cancer screening have consistently found that for women ages 40 to 49, screened women have a higher rate of death from breast cancer than unscreened women for up to 11 years after screening starts. Only then do benefits appear.
"Women are supposed to be informed before making decisions about screening, but unfortunately, most are ill-informed about both the hazards and the benefits of screening," Baines writes.
She offers possible biologic explanations for the higher mortality rates among younger women treated for breast cancer, such as the stimulation of dormant metastases after surgery and the low-energy X-rays used in screening mammography, which some believe are more likely to cause cancer than high-energy X-rays.
Baines says more concrete answers should be available after publication of results from a U.K. trial of mammography screening, which ...
- Commentaries question benefit of early screening.
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