What is a breast ultrasound?

A breast ultrasound is typically performed after a mass or lump has been found physically or on mammography. Ultrasound (also sometimes referred to as "sonography" or "ultrasonography") uses high-frequency sound waves instead of radiation to look at structures within the body, so there are no health risks associated with ultrasounds. A breast ultrasound allows the radiologist to see if the mass or lump is fluid filled (indicating a possible benign cyst) or if it is solid (indicating possible malignancy). It also allows the radiologist to see whether there is blood flow to the mass or lump.

Patient undergoing breast ultrasound

Breast ultrasound image

What should I do to prepare for a breast ultrasound?

You will be asked to undress above the waist and will be given a hospital gown to cover you, so wear clothing that will be easy to change out of.

What can I expect during a breast ultrasound?

You will be asked to lie flat on an examination table with your arm above your head.  The technologist will then apply a clear gel to the area of the breast being scanned.  A small hand-held device called a "transducer" will be pressed firmly against the breast and moved back and forth over the area as the sonographer or radiologist looks at the images on the screen.  This process can take up to 30 minutes. Breast ultrasounds are typically painless, but sometimes discomfort can occur from the pressure being applied to the breast. Once the ultrasound is completed, the gel will be wiped off and you can return to normal activity.

When will I get my results?

The radiologist will let you know before you leave if there is anything suspicious requiring further follow-up. 

For more information about breast cancer and breast imaging, please visit the American Cancer Society's web page at http://www.cancer.org.