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Screening and Diagnostic Mammograms

Picture of a woman getting a mammogram.

A  screening mammogram helps detect breast cancer in the early stages, before it has spread. Screening mammograms are recommended annually for women who are 40 years or older, as well as those who may be at higher risk for breast cancer (e.g., family history). The exam takes about 15 minutes and usually includes taking two radiographic images of each breast. UC San Diego Health offers both 2D and tomosynethsis (also known as "3D") mammography.

A  diagnostic mammogram provides a more detailed X-ray of the breast. It is used to further investigate suspicious changes found on a screening mammogram.

A diagnostic mammogram may be needed if there is:

  • Breast pain
  • Nipple discharge
  • Skin thickening
  • A lump
  • Changes in breast size or shape

bullet See what to look for when performing a breast self-exam at home.

Mammograms: Important Things to Know

A Call Back Does Not Mean Cancer

The majority of women have normal mammogram screenings. In some circumstances, patients are asked to come back for additional mammogram views and/or ultrasound. This does not mean that you have cancer or will require a biopsy, only that additional imaging is needed to evaluate an area. Our schedulers will call you to arrange an appointment for a diagnostic mammogram and/or ultrasound at the earliest opportunity.

If you need a biopsy or follow-up surgical consult, you will be referred to the Comprehensive Breast Health Center.

10 Percent of Cancers Cannot Be Seen

Mammography is not perfect; about 10 percent of cancers cannot be seen. If you have a lump, mass, or other specific problems related to your breasts, you should inform your primary doctor and make sure that you receive appropriate follow-up care.

Preparing For Your Mammogram

On day of your mammogram, it's important that you do not wear deodorant, lotion or powder. If you are breastfeeding, it is best to schedule your screening mammogram for at least three months after you have stopped nursing.

If you have had a mammogram at another center, please arrange with that facility to get a CD or original images of your mammogram. Bring these with you the day of your exam or you can mail ahead of time. We can also obtain your records from another facility for you (ask our office for the necessary forms).

Breast Density Notification

As of April 1, 2013, California legislation requires that all patients receiving a mammogram be notified if they have dense breast tissue. Dense breasts are normal. We have always reported breast density to your doctor, but are now mandated by the state to inform you as well. We encourage you to talk to your primary care provider about any further questions you may have. Learn more.

Make An Appointment

Call 619-543-3405

Breast Imaging Services Locations

La Jolla
Moores Cancer Center
MonThu: 7:30 a.m. – 6:30 p.m.
Fri: 7:30 a.m. – 4:30 p.m.
Sat: Please call for hours

Hillcrest
4th and Lewis Medical Offices
MonFri: 8:30 a.m. – 4:30 p.m.


Athena-Logo-small.jpgWe partner with Athena Breast Health Network. Athena brings together patients, doctors and researchers from UC San Diego Health and four other University of California medical centers to look at breast health in a whole new way and provide the best possible breast cancer screening, prevention and treatment for every patient.

At your mammogram you may be asked to complete Athena's online intake form. This will help UC San Diego Health develop a care plan for you. You may also be given the option to participate in breast health research. 

 Find out more about Athena.

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