Medicine
In the February 15th issue of American Family Physician, Dr. Maria Tirona reviews areas of agreement and disagreement in major organizational guidelines on screening for breast cancer. There is widespread consensus that annual or biennial mammography should be offered to women 50 to 74 years of age, and that teaching breast self-examination does not improve health outcomes. For women 40 to 49 years of age, in whom the risks and benefits of mammography are closely balanced on a population level, the U.S. Preventive Services Task Force and the American Academy of Family Physicians recommend shared decision making, taking into account individual patient risk and patients' values regarding benefits and harms of screening.
In an accompanying editorial, however, Drs. Russell Harris and Linda Kinsinger argue that shared decision making regarding breast cancer screening need not be limited to younger women:
More and more, the goal for breast cancer screening is not to maximize the number of women who have mammography, but to help women make informed decisions about screening, even if that means that some women decide not to be screened. ... The goal of improving patient decision making should be expanded to all women eligible for breast cancer screening (i.e., those 40 to 75 years of age who are in reasonable health), because the benefits and harms of screening are not very different among these age groups.
This means that for every 2,000 women invited for screening over 10 years, one will have her life prolonged, and 10 healthy women who would not have been diagnosed if there had not been screening will be treated unnecessarily. Furthermore, more than 200 women will experience important psychological distress for many months because of false-positive findings.
- This Is 40: Evidence-based Vs Politically Mandated Care
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- What Scientific Progress? For Breast Cancer Screening, Congress Acts Like It's Still 2002
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- Shared Decision-making For Lung Cancer Screening: Will It Work?
Earlier this month, the Centers for Medicare & Medicaid Services (CMS) officially proposed coverage for annual low-dose computed tomography (LDCT) screening for lung cancer in current or former smokers age 55 to 74 years with at least a 30 pack-year...
- Screening Mammography: Growing Costs, Shrinking Benefits
Providing preventive services is a core responsibility of family physicians, and, consequently, American Family Physician devotes many pages to keeping readers up-to-date with the latest studies and recommendations on breast cancer screening....
- A Different Perspective On Screening For Breast Cancer
A nurse practitioner and writer living in Washington, DC, Veneta Masson contributed a guest post to Common Sense Family Doctor earlier this year. This month, she published a thought-provoking piece in the journal Health Affairs, titled "Why I Don't...
Medicine
Should screening mammography always be a shared decision?
In the February 15th issue of American Family Physician, Dr. Maria Tirona reviews areas of agreement and disagreement in major organizational guidelines on screening for breast cancer. There is widespread consensus that annual or biennial mammography should be offered to women 50 to 74 years of age, and that teaching breast self-examination does not improve health outcomes. For women 40 to 49 years of age, in whom the risks and benefits of mammography are closely balanced on a population level, the U.S. Preventive Services Task Force and the American Academy of Family Physicians recommend shared decision making, taking into account individual patient risk and patients' values regarding benefits and harms of screening.
In an accompanying editorial, however, Drs. Russell Harris and Linda Kinsinger argue that shared decision making regarding breast cancer screening need not be limited to younger women:
More and more, the goal for breast cancer screening is not to maximize the number of women who have mammography, but to help women make informed decisions about screening, even if that means that some women decide not to be screened. ... The goal of improving patient decision making should be expanded to all women eligible for breast cancer screening (i.e., those 40 to 75 years of age who are in reasonable health), because the benefits and harms of screening are not very different among these age groups.
The primary benefit of screening mammography is an estimated 15 percent relative reduction in deaths from breast cancer; harms of mammography include false positive results, overdiagnosis, and overtreatment. A recent study published in BMJ explored the impact of overdiagnosis on attitudes toward mammography in several focus groups of Australian women 40 to 79 years of age. Few women had ever been informed about overdiagnosis as a potential harm of screening. Most women continued to feel that mammography was worthwhile if overdiagnosis was relatively uncommon (30 percent or less of all breast cancers detected). However, a higher estimate of overdiagnosis (50 percent) "made some women perceive a need for more careful personal decision making about screening."
Notably, a 2011 Cochrane Review estimated that 30 percent of breast cancers detected through screening are overdiagnosed:
This means that for every 2,000 women invited for screening over 10 years, one will have her life prolonged, and 10 healthy women who would not have been diagnosed if there had not been screening will be treated unnecessarily. Furthermore, more than 200 women will experience important psychological distress for many months because of false-positive findings.
Given this information, what approach should doctors take with screening mammography? Do you believe that this test should be routinely provided to women of eligible ages, a shared decision for some, or (as Drs. Harris and Kinsinger advocate), a shared decision for a woman at any age? Why is it often difficult to promote such shared decision making in clinical practice?
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The above post was first published on the AFP Community Blog.
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The above post was first published on the AFP Community Blog.
- This Is 40: Evidence-based Vs Politically Mandated Care
Ironically, my Viewpoint on public health and screening mammography appears in JAMA the day after I turned 40. Written with Georgetown law professor Lawrence Gostin, it articulates the reservations I expressed last week about Congress preemptively overruling...
- What Scientific Progress? For Breast Cancer Screening, Congress Acts Like It's Still 2002
When I resigned from the staff of the U.S. Preventive Services Task Force to return to academia, I said that one of my reasons was to give the USPSTF one more "private sector ally" by being freed to "speak my mind" about the adverse effects of political...
- Shared Decision-making For Lung Cancer Screening: Will It Work?
Earlier this month, the Centers for Medicare & Medicaid Services (CMS) officially proposed coverage for annual low-dose computed tomography (LDCT) screening for lung cancer in current or former smokers age 55 to 74 years with at least a 30 pack-year...
- Screening Mammography: Growing Costs, Shrinking Benefits
Providing preventive services is a core responsibility of family physicians, and, consequently, American Family Physician devotes many pages to keeping readers up-to-date with the latest studies and recommendations on breast cancer screening....
- A Different Perspective On Screening For Breast Cancer
A nurse practitioner and writer living in Washington, DC, Veneta Masson contributed a guest post to Common Sense Family Doctor earlier this year. This month, she published a thought-provoking piece in the journal Health Affairs, titled "Why I Don't...