Magnetic Resonance (MR) is considered a third-generation imaging technique for breast cancer patients, in fact provides further useful information to obtain more precise definitions about the nature of lesions, particularly in case of inadequate or discordant results at traditional techniques. To the date, MR is considered to have high sensitivity but low specificity to discriminate the benign from malignant lesions. However MR-guided biopsies are determinant to achieve a correct histological diagnosis in case of lesions evidenced exclusively at MR. The MR improves the clinical comprehension of the significance of enhanced areas increasing the specificity of the technique as well. In the past, the histological typing of breast lesions, evidenced only at MR, was obtained exclusively through surgical procedures, nowadays the opportunity of use MR guided procedures as biopsies or reperage of impalpable lesions drastically reduced the invasive surgical ones. The purpose of this work is to asses the benefit of MR-guided interventistic procedures in breast lesions with dedicated materials as amagnetic wires and shearing needles
