By the end of this presentation, the learner will be able to: Recognize the history of localization techniques. Review technical aspects of radar reflector localization. Discuss the benefits and pitfalls of this technique. Describe strategies to overcome potential pitfalls.

Mammographic screening detects small non palpable breast cancers at an early curable stage [1] Many patients are candidates for breast conserving surgery (BCS) BCS is proven to be safe and effective when a negative margin is obtained and radiation therapy is given after surgery The main goal of BCS is to fully remove tumor while achieving the best possible cosmetic outcome and avoiding unnecessary removal of normal breast tissue Pre-operative wire localization for many years has been the only method to guide surgical excision of...

Historical perspective There is no difference in disease free survival in patients undergoing mastectomy v. BCS with radiation [2] Non-palpable lesions detected by mammography required preoperative localization to guide the surgeon in performing a cosmetically acceptable lumpectomy Wire localizations were introduced in the 1970s and for many years had served as the only method for preoperative breast localization (Figure 1)[3] Wire localization can be performed under mammographic, sonographic or magnetic resonance image guidance (Figure 2) Disadvantages of wire localization include: Scheduling challenges, as wire must...

Imaging guided localization of non-palpable breast lesions is essential for successful BCS and excellent cosmetic patient outcomes An alternative to wire localizations techniques is wireless localization with RF, radioactive seeds or magnetic marker In this exhibit we discussed the RF localization RF wireless localization allows flexibility in scheduling and comfort for the patient while maintaining high negative margin and low reexcision rates Simple and fast, this technique can be used under ultrasound or mammography/tomosynthesis guidance Single prospectivestudy has demonstrated higher patient and surgeon satisfaction over...

1. Helvie MA, Chang JT, Hendrick RE, Banerjee M. Reduction in late-stage breastcancer incidence in the mammography era: implications for overdiagnosis of invasive cancer. Cancer 2014;120(17):2649–56 2. Veronesi U., Cascinelli N., Mariani L et al. Twenty year follow up of a randomized study comparing breast conserving surgery with radical mastectomy for earlybreast cancer. N Engl J Med 2002; 347:1227-1232 3. Hall FM, Kopans DB, Sadowsky NL, Homer MJ. Development of wire localization for occult breast lesions: Boston remembrances. Radiology 2013;268(3):622–7 4. Davis PS, Wechsler RJ,...