Breast-Conserving Surgery Guided with Magnetic Seeds vs. Wires: A Single-Institution Experience

Area of Science:

• Oncology
• Surgical Oncology
• Radiology

Background:

• Non-palpable breast lesions often require image-guided localization for surgical excision.
• Traditional wire localization can be associated with patient discomfort and logistical challenges.
• Advancements in localization techniques aim to improve surgical precision and patient outcomes.

Purpose of the Study:

• To evaluate the initial experience with magnetic seeds (Magseed®) for guiding breast-conserving surgery (BCS) in non-palpable breast lesions.
• To compare the efficacy of magnetic seed-guided BCS with wire-guided BCS regarding clinical and pathological characteristics.

Main Methods:

• A retrospective study analyzed 225 BCS cases for non-palpable lesions (<16 mm) from June 2018 to May 2021.
• Cases were divided into two groups: magnetic seed (Magseed®) guided (n=149) and wire guided (n=76).
• Comparison focused on tumor/patient characteristics, surgical time, and pathological results.

Main Results:

• All lesions were successfully localized in both groups.
• The median excised specimen volume was significantly lower in the magnetic seed group (29.3% reduction) compared to the wire group (p < 0.02).
• No significant differences were observed in surgical time or margin status between the two methods.

Conclusions:

• Magnetic seed (Magseed®) localization is a feasible and effective method for guiding BCS in non-palpable breast lesions.
• This technique allows for the resection of less breast tissue while maintaining oncological safety.
• Magnetic seeds represent a promising advancement in breast cancer surgery localization.