Given that clinical breast exams are somewhat time consuming, “clinicians should use this time instead for ascertaining family history and counseling women regarding the importance of being alert to breast changes and the potential benefits, limitations, and harms of screening mammography,” the authors wrote.
“This new recommendation should not be interpreted to discount the potential value of clinical breast exams in low-resource settings where mammography screening may not be feasible,” they added.
In the accompanying editorial, Dr. Keating and Dr. Pace called this recommendation “a marked deviation from prior ACS guidelines and a stronger statement than that of the USPSTF,” which states only that the evidence is insufficient to recommend for or against clinical breast exams.
They noted that the majority of women who are diagnosed as having breast cancer “will do well regardless of whether their cancer was found by mammography.”
According to the most recent data, approximately 85% of women in their 40s and 50s who die of breast cancer would have died regardless of mammography screening. And even that 15% relative benefit translates to a very small absolute benefit: only 5 of 10,000 women in their 40s and 10 of 10,000 women in their 50s are likely to have a breast cancer death prevented by regular mammography, Dr. Keating and Dr. Pace wrote (JAMA 2015;314[15]:1569-71).
“It is important to remember and emphasize with average-risk women older than 40 years that there is no single right answer to the question ‘Should I have a mammogram?’ ” they wrote.
The American Cancer Society and the National Cancer Institute sponsored this work. Dr. Oeffinger reported having no relevant financial disclosures, and his associates reported ties to numerous industry sources.