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UW Health SMPH
American Family Children's Hospital

Ultrasound-Guided Needle Core Biopsy

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(608) 263-XRAY

(608) 263-9729

Health Information

Ultrasound Breast Core Biopsy
UW Health radiology offers ultrasound-guided needle core biopsy as a diagnostic procedure.
When to Use Ultrasound-Guided Needle Core Biopsy

If a breast abnormality is seen well by ultrasound, an ultrasound-guided needle core biopsy can be performed using a specialized biopsy device. The biopsy device quickly advances a needle a short distance into the breast and obtains a small core of tissue. The procedure is generally painless and leaves no surgical scar. 

The Procedure 

After cleansing, the skin is numbed with a local anesthetic, and a small skin incision is made in order to introduce the biopsy needle into the breast. The biopsy needle is then directed to the edge of the abnormality. As the biopsy device is released, a “click” is heard and the tissue along the path of the needle is removed. Several small tissue samples are obtained from the abnormality and are sent to the pathologist for examination under a microscope. We hold pressure on the biopsy site for a few minutes, then a small dressing is applied.

After The Procedure
The procedure may produce minimal discomfort and bruising. A non–aspirin product is typically sufficient for any discomfort. Strenuous activity is discouraged for 24 hours.
Your referring physician should receive the results of your biopsy within one week. Please contact their office for your final results.