Localization of impalpable breast lesions and detection of sentinel lymph nodes through magnetic methods.

•We used a new technology for localizing breast lesions through small steel seeds.•The seeds can be detected using a magnetic probe.•Magnetic method was simultaneous used for SLN detection.•All 41 breast tumors were accurately localized using the magnetic seed.•The SLN biopsy was successful in all 27 patients undergoing this procedure.