Breast cancer screening looks for signs of cancer before a woman has symptoms. Screening can help find breast cancer early, when the chance of successful treatment is best. Two tests are commonly used to screen for breast cancer: Mammogram. A low-dose x-ray exam of the breasts to look for changes that are not normal.
https://www.womenshealth.gov/breast-cancer/screening-diagnosis-mammogram-breast-exam/
A diagnostic mammogram consists of additional images from several angles and is used for women who are experiencing breast symptoms (such as a lump, unusual nipple discharge or pain), women who have had breast cancer, and women with breast implants.
http://www.bccancer.bc.ca/screening/breast/get-a-mammogram/what-is-a-mammogram
Regular screening is the best way to find breast cancer early in most women. If you are at higher risk of breast cancer, your doctor might want to use other tests too, such as a different type of mammogram or magnetic resonance imaging (MRI).
https://www.womenshealth.gov/breast-cancer/screening-diagnosis-mammogram-breast-exam/
A screening mammogram consists of four images (two of each breast) that look for hidden cancer in women who are healthy (no symptoms) and have never had breast cancer. The Screening Mammography Program of BC (SMP) offers screening mammograms to eligible women in BC.
http://www.bccancer.bc.ca/screening/breast/get-a-mammogram/what-is-a-mammogram
1 Diagnostic mammogram. This type of mammogram uses x-rays to take more detailed images of areas that look abnormal on a screening mammogram.  Ultrasound exam. Sound waves help your doctor see if a lump is solid (could be cancer) or filled with fluid (a fluid-filled sac that is not cancer).
https://www.womenshealth.gov/breast-cancer/screening-diagnosis-mammogram-breast-exam/
Screening mammograms are for women with no symptoms of breast cancer (no apparent breast problems). Diagnostic mammograms are ordered by a doctor to look at an area of concern in the breast; which may lead to more tests; such as an ultrasound or a biopsy.
http://www.bccancer.bc.ca/screening/breast/get-a-mammogram/what-is-a-mammogram
A mammogram is an X-ray test that produces an image of breast tissue on film. This technique, called mammography, is used to visualize normal and abnormal structures within the breasts. Mammography, therefore, can help in identifying cysts, calcifications, and tumors within the breast. It is currently the most efficient screening method to detect early breast cancer. Physical examinations typically find breast cancers when they are much larger than those detected by mammography.
http://www.medicinenet.com/mammogram/article.htm
Tomosynthesis is a new technology available to improve investigation of breast problems. The quality of all mammograms in the SMP is of the highest standard. Further assessment is needed to determine the optimal use of breast tomosynthesis in breast health.
http://www.bccancer.bc.ca/screening/breast/get-a-mammogram/what-is-a-mammogram
These trials have found a relative risk reduction of breast cancer deaths of between 15-25% for women aged 50-69. Of eight randomized control trials for screening mammography, seven showed that screening mammography is beneficial.
http://www.bccancer.bc.ca/screening/breast/get-a-mammogram/what-is-a-mammogram
Breast Cancer Early Signs and Diagnosis. The most common sign of breast cancer is a new lump or mass in the breast. Although breast cancer can be diagnosed by the above signs and symptoms, the use of screening mammography has made it possible to detect many of the cancers early before they cause any symptoms.
http://www.medicinenet.com/mammogram/article.htm
what is mammogram screening
Mammogram screening is an X ray test that produces an image of breast tissue on film.   Mammogram screening is an X-ray test that produces an image of breast tissue on film.