Evaluation of Magseed marker in location of non-palpable breast lesions

Abstract

<b>Introduction:</b> Currently, there is an increasing number of breast cancer cases detected at an early stage. Removal of the minimum tissue volume that is necessary ensures that the correct shape of the breast is preserved. On the other hand, it is important to maintain negative tissue margins.</br></br> <b>Aim:</b> The aim is to present our own experience with pre-operative breast tumor marking using the Magseed marker.</br></br> <b>Material and methods:</b> On the day before surgery, the Magtrace magnetic marker was placed to map the lymph nodes, together with the Magseed magnetic marker placed in the tumor under ultrasound guidance, and the site of the lesion was marked with the skin marker as the surgical site. Before skin incision, the lesion was located using intraoperative ultrasound and the Sentimag probe. After the tumor was cut out, the presence of the marker was confirmed within the specimen using the magnetic method and the compatibility of the ultrasound image before and after the procedure.</br></br> <b>Results:</b> The study group consisted of 23 patients. Radical surgery was achieved in 20 patients (87%). To assess the sample and tumor sizes, we used the formula for the volume of the ellipsoid published by Angarita et al. We assessed how much of the sample was occupied by the tumor marked with the Magseed marker. We compared the cohorts of 11 patients at the beginning and at the end of the group, showing a significant increase in this parameter. Along with the learning curve, it is possible to more precisely identify the tumor and save healthy breast tissue while improving the aesthetic effect of the breast.</br></br> <b>Conclusions:</b> The method of localizing non-palpable lesions in the breast using the Magseed marker is simple to use, and its high detection rate directly translates into a reduced rate of non-radical resection during breast-conserving surgery.