[Value of high speed punch biopsy after mammographic stereotactic localization in diagnosis of non-palpable breast changes].

To investigate the accuracy of a single high-speed core biopsy, in 159 stereotactically localised nonpalpable breast lesions a single high-speed core biopsy was performed prior to open surgery. All pathological findings of the specimen, core biopsies and open biopsies, were compared. Two biopsies were technically insufficient.