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    Breast Cancer - Exams and Tests

    Early detection

    You may have a screening test to look for breast cancer. (Screening tests help your doctor look for a certain disease before any symptoms appear.) The earlier breast cancer is found, the more easily and successfully it can be treated.

    The type and frequency of breast cancer screening that is best for you changes as you age. The most common ways to find breast cancer early include:

    Diagnostic tests

    If your doctor thinks that you have breast cancer, you may have other tests, including:

    • More mammograms.
    • An ultrasound. You may have an ultrasound of the breast if a lump is found during a clinical breast exam or on a mammogram.
    • An MRI of the breast. This is sometimes used to get more information about a breast lump or to evaluate problems in women who have breast implants.
    • A breast biopsy. If a lump is found in your breast, your doctor will need to remove a small sample of the lump (biopsy) and look at it under a microscope to see whether any cancer cells are present.
    • Other tests may be done to help with treatment decisions. These include:
      • Estrogen and progesterone receptor status. The hormones estrogen and progesterone stimulate the growth of normal breast cells as well as some breast cancers. Hormone receptor status is an important piece of information that will help you and your doctor plan treatment.
      • HER-2 receptor status. HER-2/neu is a protein that regulates the growth of some breast cancer cells. Some women with breast cancer have too much (overexpression) of this growth-promoting protein.
      • Multi-gene tests for postmenopausal women with hormone-receptor-positive, HER-2 negative breast cancer. These tests can show your chances of the cancer coming back. This can help your doctor tell whether chemotherapy is likely to work for you.
    • A complete blood count (CBC) to provide important information about the kinds and numbers of cells in your blood.
    • A chemistry screen, to measure the levels of several substances (such as those involved in liver functions) in your blood.
    • A chest X-ray, to provide a picture of organs and structures within your chest, including your heart and lungs, your blood vessels, and the thin sheet of muscle just below your lungs (diaphragm).
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