Radiofrequency Identification Technology in Locating Non-palpable Breast Lesions in Patients Undergoing Surgery

PRIMARY OBJECTIVES: I. Evaluate the feasibility of utilizing a new Federal Drug Administration (FDA)-cleared radiofrequency tag for localization of non-palpable breast lesions and provide preliminary data for a larger study. OUTLINE: Patients undergo mammogram or ultrasound for image-guided placement of the radiofrequency tag within 30 days of surgery and then undergo radiofrequency-guided localization during surgery. After completion of study, patients are followed up within 2 weeks.