USPSTF: Rationing or Rational Use of Screening Tools for Detecting Breast Cancer

Yesterday, the US Guide to Preventive Services released the latest guidelines on breast cancer screening recommendations. The press went wild and said this was government rationing of preventive testing. The "US Guide to Preventive Services Task Force Guidelines show stark differences of opinion with the specialty groups regarding screening, diagnostic and treatment methods. When the numbers came in, physicians following specialty colleges' recommendations were overtesting, overtreating and unnecessarily worrying patients. The research did not back up the specialty standards." Most of these recommendations are by convention rather than by scientific medical evidence.


Let's set the record straight - The USPSTF never recommended routine screening at 40 - there was insufficient evidence to recommend for or against routine mammography or clinical breast exams in the 40-49 y.o. age group for the general population - NOTHING CHANGED. It was the specialty & disease societies such as American Cancer Society, AMA and American College of Obstetrics and Gynecology that made these recommendations. Other groups, such as the American College of Physicians, said it should be based on the risk of the individual patient. It should always be based on the individual patient's need - these are population guidelines - of course, the patient in front of you may have different needs.

What did change? The 2002 Guidelines said mammography every 1-2 years was recommended for women age 50-69y.o., although recommendations for high risk women 40-49 and healthy women > or = 70 may be made on other grounds. Today's Guidelines say: Mammography screening is recommended every 2 years for women age 50-74. The USGPSTF is recommending screening for a LONGER period of time, NOT less.

Why every two years screening? Because mammograms are not benign - they expose a patient to radiation. The USPSTF also says "Although false-positive test results, overdiagnosis, and unnecessary earlier treatment are problems for all age groups, false-positive results are more common for women aged 40 to 49 years, whereas overdiagnosis is a greater concern for women in the older age groups." Subsequent biopsies will change the breast architecture and make it more difficult to interpret future exams. Evidence also shows that the more mammograms a woman has the more likely she will have a "false-positive" mammogram. According to a Harvard Pilgrim Healthcare study in the Journal of the National Cancer Institute which followed women over a 10-year period with "9747 screening mammograms, 6. 5% were false-positive; 23.8% of women experienced at least one false-positive result. After nine mammograms, the risk of a false-positive mammogram was 43.1%." Clearly more diagnostic testing does NOT equate to higher quality medical care.