- in order to lessen these risks, the wire must be placed as late as possible before transfer to the surgical wing (the previous day at the earliest). Consequently, organizing the patient's transfer, particularly in the event of outpatient surgery (less than 12h at the hospital) becomes complicated and requires coordination between the different units in charge of preoperative management (radiology, nuclear medicine, admittance, and operating room) and early inclusion of these patients in the operating room schedule or postponement of surgery in the event of migration or displacement of the wire. These various constraints can result in a reduction of the number of patients able to benefit from outpatient management, as demonstrated by Dravet et al. Several alternative techniques have been put forward in order to overcome these difficulties, including radioguided seed localization (RSL), which consists in implanting a sealed source of radioactive iodine125 (iodine seed) inside the tumor to provide a preoperative marker which can be monitored by the surgeon using a gamma probe. The RSL technique is currently used in Europe (Netherlands), Canada and the USA.