An Audit on Oncological Safety with Magseed Localised Breast Conserving Surgery

Area of Science:

• Oncologic Surgery
• Breast Surgery
• Minimally Invasive Techniques

Background:

• Wire-localised wide local excision (W-WLE) is the standard for impalpable breast lesions.
• Wire-based localisation presents logistical challenges and risks.
• Magseed-localised wide local excision (M-WLE) is an emerging alternative.

Purpose of the Study:

• To compare the safety and efficacy of M-WLE versus W-WLE.
• To evaluate re-excision rates and length of hospital stay (LOS).
• To assess the impact on patient waiting times for surgery.

Main Methods:

• Retrospective comparison of M-WLE cases with a historic matched cohort of W-WLE cases.
• Analysis of data including patient demographics, successful placements, re-excision rates, tumour size, and LOS.
• Two hundred thirty-eight patients were included in the study.

Main Results:

• Oncologically safe excision achieved in all cases for both groups.
• M-WLE demonstrated significantly lower re-excision rates (2.9% vs 10.4%).
• Median waiting time to surgery was significantly shorter for M-WLE (4h 15min vs 7h 3min), with no significant difference in LOS.

Conclusions:

• M-WLE is oncologically safe and non-inferior to W-WLE for impalpable breast lesions.
• M-WLE offers a significant reduction in re-excision rates.
• Shorter pre-operative waiting times with M-WLE positively impact the patient experience.