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To evaluate the efficiency of radioguided occult lesion localizing in non-palpable breast lesions (NPBL) compared to the surgical wire technique.A prospective study was conducted on 161 women with NPBL, of whom 80 were marked with the wire (group 1), whereas 81 women were marked with an intratumor injection of 99mTc-nanocoloid (group 2). The NPBL were located by ultrasound or stereotactic guidance...