A mammogram is an x-ray of a breast. Screening mammograms are used to check for breast cancer in women who have no signs or symptoms of the disease. Diagnostic mammograms are used to check for breast cancer after a lump or other symptom has been found.
According to the National Cancer Institute, screening mammography can help reduce the number of deaths from breast cancer in women from 40-74. Because of this, annual mammograms have long been recommended for women over the age of 40.
However, in recent years, screening mammography has been the subject of some discrepancy.Thus, we ask the question, "Why is mammogram advice such a moving target?"