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University of California San Francisco
Patient Education

Basic Facts About Breast Health: Mammograms

Related Conditions
Breast Cancer

Imaging is an important part of screening for breast cancer. A mammogram is a low-dose X-ray of the breast. While not always reliable, this is still the best test we have to screen women for breast cancer.

A screening mammogram consists of two "pictures" of each breast. If an area on the mammogram looks suspicious or is not clear, additional mammograms with different views may be needed. We recommend annual screening mammography for all women who are over 40 years old.

Diagnostic mammography is a mammogram used for problem solving, rather than for screening. For instance, if a patient has a lump in her breast, a directed investigation of that area is performed. This is also done when a particular finding in the breast is being followed over time. A diagnostic mammogram is tailored to the patient's case and is carefully monitored by a radiologist, who interprets the images and determines whether there is any need for further tests.

Basic Facts About Breast Health:

  • Anatomy
  • Breast Cancer Biology
  • Breast Cancer Staging
  • Screening Guidelines
  • Breast Self Exam
  • Mammogram
  • Lifestyle Changes for Breast Cancer Prevention
  • Nutrition for Breast Cancer Prevention

UCSF Health medical specialists have reviewed this information. It is for educational purposes only and is not intended to replace the advice of your doctor or other health care provider. We encourage you to discuss any questions or concerns you may have with your provider.

Recommended reading

Breast Cancer Glossary

Check out our comprehensive Glossary of Breast Cancer terminology, which includes definitions of everything from AC chemotherapy to peripheral neuropathy.

Breast Cancer Risk Factors

Click now to find a summary of the factors that increase risk for developing breast cancer, including both factors that we cannot change and those we can.

Self-Care and Recovery

Self-Care and recovery resources including an Introduction to Lifestyle Change, Nutrition and Breast Cancer, Hydration: Water and Health, Meditation and more.

Preparing for a Lumpectomy or Mastectomy

Learn how to prepare for a lumpectomy or mastectomy, including restrictions before surgery, what to bring to the hospital and more.

Menopause and Breast Cancer

Breast cancer treatment often causes women to enter menopause prematurely. Although each woman reacts to therapy individually, certain side effects are common.

Metastatic Breast Cancer: Diagnosis and Treatment

Metastatic breast cancer is cancer that originated in the breast and has spread to other organ systems in the body. Learn more here.

Navigating Your Path to Breast Care

Different services and information are needed at different points in breast health care and breast cancer treatment. Learn more here.

Osteoporosis and Breast Cancer

Women who have had breast cancer or are considered at high risk for developing breast cancer are at risk for developing osteoporosis. Learn more.

Radiation Therapy for Breast Cancer

The UCSF Carol Franc Buck Breast Care Center and the Department of Radiation Oncology have compiled information about radiation therapy for your convenience.

Taking Charge

Knowledge may lead you to take action to protect your health and that of other women you care about: your mother, daughters, relatives and friends. Learn more.

Related clinics

Breast Imaging

Bakar Precision Cancer Medicine Building

1825 Fourth St., Third Floor
San Francisco, CA 94158

(415) 353-3900
M-F, 8 a.m. - 4:30 p.m.

Breast Care Center

UCSF-Health John Muir Cancer Center in Berkeley

See all 6 of our Bay Area locations and learn more about the center.

Did you know?

UCSF became the birthplace of fetal surgery in 1981, when Dr. Michael Harrison performed the first successful open surgery on a fetus in the womb to correct a life-threatening birth defect. Our Fetal Treatment Center continues to be a world leader in caring for babies before they take their first breath.

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