Ultrasound-guided biopsy is the method of choice for breast masses able to be seen with ultrasound imaging, because of its safety, ease and convenience for both patient and operator. An ultrasound biopsy uses non-ionizing sound waves, unlike MRI and stereotactic methods. Biopsies are performed without breast compression with the patient lying face up on an examination table. The risks for an ultrasound biopsy are essentially the same as for any biopsy.

What to Expect

Preparation for an ultrasound biopsy is essentially the same as for any biopsy. If you take aspirin or blood thinners, your doctor may tell you to stop several days before the procedure.

As the test begins, you will be instructed to lie face-up on an examination table with your arm raised above your head. The breast under study will be exposed and a local anesthetic will be injected into the breast to numb it. The radiologist will apply a warm, water-based gel to the skin in that area; then he/she will press the handheld transducer firmly against the skin, moving it around to locate and capture the best view of the affected area. The radiologist will make a small incision (cut) and insert a needle directly into the lump or tissue area and extract a sample.  Once an adequate sampling of tissue has been acquired, the radiologist removes the needle and applies a dressing to the biopsy site. The entire procedure takes about an hour. The doctor or staff will instruct you regarding aftercare.