Researchers analyzed data from 8,794 patients with non-palpable breast lesions to compare two methods for locating tumors before surgery: magnetic seeds (Magseed) and traditional wire-guided localization (WGL). The study looked at several factors, including the size of the tissue removed, the need for repeat surgeries, and overall safety.
The results showed that patients who had their tumors marked with magnetic seeds had significantly lower rates of re-excision compared to those guided by wires. Additionally, the use of magnetic seeds was associated with smaller resection sizes. While there was a trend toward fewer positive or close margins with magnetic seeds, this specific finding did not reach statistical significance.
In terms of safety and efficiency, both methods performed similarly. There were no significant differences in perioperative complications, localization failures, or the amount of time spent in surgery. Because this is a meta-analysis of existing data rather than a new clinical trial, more prospective studies are needed to confirm these findings. However, the results suggest that magnetic seeds are a safe and effective alternative for breast-conserving surgery.
