Mammogram: What Affects The Test


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What Affects the Test


Reasons you may not be able to have the test or why the results may not be helpful include:

  • Deodorant, perfume, powders, or ointments applied to the breasts or under the arms before the test. They may interfere with the X-ray pictures.
  • Breast implants or scar tissue from previous breast surgery. This may make a mammogram more difficult to interpret.

A mammogram is not usually done if you are:

  • Pregnant, because the radiation could damage your developing baby (fetus). If a mammogram is absolutely necessary for diagnosing a problem, a lead apron will be placed over your abdomen to shield your baby from exposure to the X-rays.
  • Breast-feeding, because breasts that contain milk are very difficult to examine.


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Last updated: February 22, 2007
Author: Jan Nissl, RN, BS
Reviewed By: Joy Melnikow, MD, MPH - Family Medicine, Deborah A. Penava, BA, MD, FRCSC, MPH - Obstetrics and Gynecology
Editors: Susan Van Houten, RN, BSN, MBA, Tracy Landauer

This information is not intended to replace the advice of a doctor. By using AOL Body, you indicate that you have read, understood, and agreed to our Terms of Service, and AOL Body Advertising Policy. Read more about our content partners.

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