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Home > Health Library > Breast Ultrasound
A breast ultrasound uses sound waves to make a picture of the tissues inside the breast. A breast ultrasound can show all areas of the breast, including the area closest to the chest wall, which is hard to study with a mammogram. Breast ultrasound does not use X-rays or other potentially harmful types of radiation.
A breast ultrasound is used to see whether a breast lump is filled with fluid (a cyst) or if it is a solid lump. An ultrasound does not replace the need for a mammogram, but it is often used to check abnormal results from a mammogram.
For a breast ultrasound, a small handheld unit called a transducer is gently passed back and forth over the breast. A computer turns the sound waves into a picture on a TV screen. The picture is called a sonogram or ultrasound scan.
Breast ultrasound can add important information to the results of other tests, such as a mammogram or magnetic resonance imaging (MRI). It also may provide information that is not found with a mammogram. A breast ultrasound may be done to:
In general, there's nothing you have to do before this test, unless your doctor tells you to. Wear something that makes it easy to undress above the waist.
You will be asked to undress above the waist. You will be given a gown to drape around your shoulders. Remove all jewelry from around your neck.
Gel will be put on your breast so the transducer can pick up the sound waves as it is moved back and forth over the breast. A picture of the breast tissue can be seen on a TV screen.
A breast ultrasound test usually takes 15 to 30 minutes. More time may be needed if a breast exam will be done or if a biopsy is also planned. You may be asked to wait until a radiologist has reviewed the pictures. He or she may want to do more ultrasound views of some areas of your breast.
The gel may feel cold when it is put on your breast. You will feel light pressure from the transducer as it passes over your breast, but you should feel no discomfort unless your breast is tender because of fibrocystic breast changes, an abscess, or another infection. You will not hear the sound waves. A special Doppler ultrasound may be used to check the blood flow to the breast; you can hear the sound waves from this type of ultrasound.
There are no known risks from having this test.
The radiologist may discuss the results of the ultrasound with you right after the test. Complete results are usually available to your doctor in 1 to 2 days.
Current as of:
December 17, 2020
Author: Healthwise StaffMedical Review: Sarah Marshall MD - Family MedicineKathleen Romito MD - Family MedicineLaura S. Dominici MD - General Surgery, Breast Surgical Oncology
Current as of: December 17, 2020
Author: Healthwise Staff
Medical Review:Sarah Marshall MD - Family Medicine & Kathleen Romito MD - Family Medicine & Laura S. Dominici MD - General Surgery, Breast Surgical Oncology
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