[Preoperative radiologic localization of nonpalpable breast lesions. Technics and value. Apropos of 33 cases]

The aim of pre-operative radiologic localization is to facilitate surgery by reducing operation time and by limiting the size of excision of a benign lesion. The detection technique, the so-called "crochet" method, is described and compared with others reported in the literature. Using this method, 33 nonpalpable lesions were detected over a 6 month period and 15% of these cases had malignant tumors.