Preoperative localization is diagnostic procedure allows the radiologist to identify the abnormal tissues for the surgeon prior to surgery. If the cancer is not palpable — was detected by mammography, ultrasound or MRI — the surgeon needs a guide to know where to go to find the cancer.

Since preoperative localization can be performed using either mammography, ultrasound or MRI guidance, follow the preparation in the correspondent procedure.

Needle localizations can be performed under mammography, ultrasound or MRI guidance. Initial image will be taken to identify the area. The breast will be cleansed and anesthetized to minimize pain. The radiologist will guide a small needle and wire to the abnormal area, images will be taken to confirm accurate placement. The wire will be securely taped to the breast. The radiologist will review the final images and send them with you to the surgery center. The wire stays in your breast long enough to serve as a road map for the surgeon to find and remove the cancer.