Repérages préopératoires mammo/échographiques

The development of mammography screening and improvements in ultrasound technology resulted in a major increase of breast cancers detectable as non-palpable, sometimes very small (less than 5 mm) lesions suitable for breast-conserving treatment. Accurate preoperative localization of these cancers is a necessity to remove cancer and obtain clear margins at the initial procedure. Several methods are available for localization, of which wire-guided localization is considered the current gold standard. For breast cancer with extensive calcifications, oncoplasty techniques are becoming more and more sophisticated extending the indications of conservative surgery, and then require multiple localizing wires for excision after evaluation by both the radiologist and the surgeon. In this article, an overview of the various localization techniques is provided, describing advantages, flaws and effectiveness.