Wire Localization Using Ultrasound
Wire localization is done before a surgical breast
biopsy or lumpectomy. It is done to locate a site
of concern that can be seen on an ultrasound, but
cannot be felt.
Using ultrasound, a radiologist will place one or
more fine wires into the lesion in your breast.
This wire will help guide the surgeon to the tissue
to be removed.
You will check into the UW Outpatient Surgery
Center. There you will change into a gown and
robe. You will have an IV started. You will be
brought to the Breast Center in a wheelchair.
During the Wire Localization
You will have an ultrasound of your breast. The
staff will locate the area of concern.
1. Your breast will be cleaned with an antiseptic
2. The doctor will inject numbing medicine
(Lidocaine®) into your breast. You may feel a
sting. Our goal is that you not feel any pain
after this is given.
3. A small needle is placed into your breast at
the site of concern. You may feel pressure
during the procedure. If you feel pain, please
let the staff know.
4. When the needle placement is confirmed, the
needle is removed. A thin, thread-like wire is
left in place. The other end of the wire will
stick out of your breast. It will be taped to the
outside of your breast.
5. After the procedure is complete two or more
mammography images are taken to confirm
the wire placement.
After the Wire Localization
After the wire localization procedure, you will be
taken back to the Outpatient Surgery Center to
prepare for the upcoming surgery.
The Spanish version of this Health Facts for You is #5989.
Your health care team may have given you this information as part of your care. If so, please use it and call if you have any
questions. If this information was not given to you as part of your care, please check with your doctor. This is not medical advice.
advice. This is not to be used for diagnosis or treatment of any medical condition. Because each person’s health needs are
different, you should talk with your doctor or others on your health care team when using this information. If you have an
emergency, please call 911. Copyright © 10/2017 University of Wisconsin Hospitals and Clinics Authority. All rights reserved.
Produced by the Department of Nursing. HF#5905