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Definition

By Mayo Clinic staff

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Photo of woman undergoing mammography exam
Receiving a mammogram

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A mammogram is an X-ray image of your breast used to screen for breast cancer. Mammograms play a key role in early breast cancer detection and help decrease breast cancer deaths.

During a mammogram, your breasts are compressed between two firm surfaces in order to spread out the breast tissue. Then an X-ray captures black-and-white images of your breasts that a doctor uses to detect changes and cancer.

A mammogram can be used either for screening or for diagnostic purposes. How often you should have a mammogram depends on your age and your risk of breast cancer.

References
  1. Breast cancer screening (PDQ). National Cancer Institute. http://www.cancer.gov/cancertopics/pdq/screening/breast/Patient/AllPages. Accessed June 22, 2011.
  2. Mammography. RadiologyInfo.org. http://www.radiologyinfo.org/en/info.cfm?pg=mammo. Accessed June 22, 2011.
  3. James JJ, et al. The breast. In: Adam A, et al. Grainger & Allison's Diagnostic Radiology. 5th ed. Philadelphia, Pa.: Elsevier Churchill Livingstone; 2008. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-10163-2..X5001-5--TOP&isbn=978-0-443-10163-2&uniqId=259733166-219. Accessed June 21, 2011.
  4. Smith RA, et al. Cancer screening in the United States, 2011: A review of current American Cancer Society guidelines and issues in cancer screening. CA Cancer Journal for Clinicians. 2011;61:8.
  5. Screening for breast cancer. U.S. Preventive Services Task Force. http://www.uspreventiveservicestaskforce.org/uspstf/uspsbrca.htm. Accessed June 22, 2011.
  6. Consumer information (MQSA). U.S. Food and Drug Administration. http://www.fda.gov/Radiation-EmittingProducts/MammographyQualityStandardsActandProgram/ConsumerInformation/default.htm. Accessed June 22, 2011.
  7. Pruthi S (expert opinion). Mayo Clinic, Rochester, Minn. June 29, 2011.
  8. Yau EJ, et al. The utility of breast MRI as a problem-solving tool. The Breast Journal. 2011;17:273.
MY00303 Aug. 20, 2011

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