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To Women Under 50: Stop Annual Mammograms

In an update to its 2002 recommendations, the U.S. Preventive Services Task Force (USPSTF) now recommends against routine breast cancer screening for women under the age of 50. Women between the ages of 40 and 49 at high risk for breast cancer should talk to their doctor about the best time to start regular, biennial screening mammography. The full recommendations appear in the November 17 issue of Annals of Internal Medicine.

In addition to revising the age at which mammography screening should begin, the USPSTF also suggests changing the screening interval from one year to two, up to the age of 74. There is insufficient evidence to determine the screening benefits and harms for women aged 75 or older.

The Task Force recommends against teaching breast self-examination, as adequate evidence suggests that teaching self-examination does not reduce breast cancer mortality. USPSTF researchers also conclude that the current evidence is insufficient to assess the additional benefits and harms of clinical breast examination for women 40 and over. This recommendation is a change from the 2002 statement, which suggested mammography screening, with or without clinical breast examination, every one to two years for women aged 40 years or older.

According to the available evidence, screening with film mammography reduces breast cancer mortality, especially for women aged 50 to 74 years, with the greatest benefit seen in women aged 60 to 69. Among women 75 and older, evidence of the benefits of mammography is lacking.

The USPSTF did not recommend one form of mammography over another. According to its recommendation, the current evidence is insufficient to assess additional benefits and harms of either digital mammography or magnetic resonance imaging instead of film mammography as screening modalities for breast cancer.

To update the 2002 recommendation statement, researchers systematically reviewed published evidence of the efficacy of five screening modalities in reducing mortality from breast cancer: film mammography, clinical breast examination, breast self-examination, digital mammography, and magnetic resonance imaging. In addition, the Task Force commissioned two studies related to breast cancer screening: a targeted systematic evidence review of six selected questions relating to the benefits and harms of screening; and a decision analysis that used population modeling techniques to compare the expected health outcomes and resource requirements of starting and ending mammography screening at different ages and using annual versus biennial screening intervals.



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One comment

  1. Usually a recommendation NOT to perform an exam is based on the risk of the exam outweighing the benefit of the exam. The above information doesn’t explain the risk of doing self breast exams for women under 50. Why would the recommendation be to discontinue teaching self exams, if the harm in doing so is not higher than the benefit?

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