Breast Ultrasound

Definition

Breast ultrasound uses sound waves that cannot be heard by humans to look at the breast. It is performed to detect or characterise breast lumps, and is often done in conjunction with mammography.

Alternative Name

Ultrasonography of the breast.

How the test is performed

Patients are asked to undress from the waist up and put on a medical gown. During the test, you will lie on your back on the examination table. You will be asked to place your arm behind your head whilst the breast is being examined.

A water-soluble gel is placed on the skin of the breast. A hand-held device (transducer) directs the sound waves to the breast tissue. The transducer is moved over the skin of the breast to create a picture that can be seen on a screen.

Breast ultrasound may also be used to guide a needle during a breast biopsy.

How to prepare for the test

Because you need to remove your clothing from the waist up, it may be helpful to wear a two-piece outfit. On the day of the test, do not use any lotions or powders on your breasts or wear deodorant under your arms.

How the test will feel

The number of people involved in the test will be limited to protect your privacy.
There is no discomfort from the ultrasound

Why the test is performed

Common uses of breast ultrasound are:
In addition to a mammogram or physical exam. If a mammogram shows a growth, ultrasound can help determine whether it is a solid mass or a cyst.
By itself, to check a breast lump or nipple discharge.

What abnormal results mean

mean Ultrasound can detect and help differentiate between cystic and solid lumps. Breast cancers may also be demonstrated with ultrasound.

What the risks are

There are no risks associated with breast ultrasound. There is no radiation exposure.