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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 is done to:
- Find the cause of breast symptoms, such as pain, swelling,
and redness.
- Check a breast lump found on breast self-examination or physical
examination. It is used to see whether a breast lump is fluid-filled
(a cyst) or if it is a solid lump. A lump that has no fluid or
that has fluid with floating particles may need more tests.
- Check abnormal results from a mammogram.
- Look at the breasts in younger women because their breast tissue
is often more dense, and a mammogram may not show as much detail.
- Guide
the placement of a needle or other tube to drain a collection
of fluid (cyst)
or pus (abscess),
take a sample of breast tissue (biopsy),
or guide breast surgery.
- Watch for changes in the size of a cyst.
- Check your breasts if you have silicone breast implants or
dense breasts. In these situations, a mammogram may not be able
to see breast lumps.
You will be asked to undress above the waist. You will be given
a gown to drape around your shoulders. Wear a two-piece outfit
so that it is easy to undress above the waist.
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 between 15 and 30 minutes.
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