Mammography
A screening mammogram is an X-ray used to detect breast changes in women who display no signs or symptoms of breast cancer. It is currently the best available tool for detecting breast cancer; however, women must be aware of its capabilities and limitations.
Y-ME suggests the following:
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Women should discuss the benefits and risks of screening with their health care providers.
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Screening should occur every 1-2 years for women 40-49 years of age and annually for those 50-69. For those 70 and older, screening should continue as long as women maintain good health and have no other prohibitive medical conditions.
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Women who are younger than 40 should consider, in consultation with their healthcare provider, to have regular screening mammograms if they:
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have an extensive family history of breast or ovarian cancer;
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had irradiation at a young age in the area of the breast;
- carry the BRCA1 or BRCA2 gene mutation; and/or
- are planning breast reduction surgery
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Any abnormality found on a screening mammogram should be discussed with a physician and followed up appropriately.
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Women—and men—of any age who have unusual changes in their breasts (e.g., lump, dimpling, skin irritation and nipple discharge) should consult a healthcare provider and together consider having a diagnostic mammogram.
The following table presents recommendations of other national organizations.
Organization |
Age: |
Age: |
Age: <70 |
American Cancer Society |
Annual |
Annual |
Annual |
American Medical Association |
Annual |
Annual |
Annual |
American College of Radiology |
Annual |
Annual |
Annual |
US Preventive Service Task Force |
1-2 yrs. |
1-2 yrs. |
1-2 yrs. |
National Cancer Institute |
1-2 yrs. |
1-2 yrs. |
1-2 yrs. |
Adapted from Loyola University Health System, Care System, Cardinal Bernardin Cancer Center recommendations.
Given the lack of clear evidence on the timing of screening mammograms, women should consult with their physicians to determine a schedule best for themselves.
For more information about mammography, see the fall 2002 issue of Lifeline article, "Ask the Doctor."

