ABS ePoster Library

P157
Topic: Surgical techniques

Introduction: Breast services across the UK are experiencing unprecedented
challenges due to radiology shortages necessitating changes in practice to
maximise efficiencies. Impalpable breast lesion localisation has traditionally
been performed using wire or ROLL techniques, which require radiologist
input on the day of surgery. The Magnetic seed (Magseed®) approach allows
greater flexibility in list planning and frees up vital radiology time. We have
audited our early experience to ascertain the safety and ease of use for
surgeons and radiologists. Methods Prospective data collection included method of Magseed®
insertion, ease/accuracy of placement, tumour characteristics, post operative
margin involvement and re-excision rates. Surgical resections were carried out
using Sentimag ®. Results: Data were provided by 5 surgeons and 3 radiologists working
within Betsi Cadwaladr University Health Board. Since May 2018, 37 Magseed®
guided excisions have been performed in 36 patients, average age 62 years.
Pre-operative pathology: IDC n=25(68%), DCIS n=8(22%), others n=4(10%). Mean size
13mm (range3-25mm). Radiological Magseed® placement: USS 25, Stereo 5patients,
unknown 7. Ease of placement score:mode=2 (“easy”); accuracy of placement:72% central
to lesion, 25% within lesion but not central, 3% at lateral border. Radial margins
involved in 8 (22%) cases. Pre-operative underestimation of disease volume was
relevant in all of these cases. Conclusions: Radiological guided placement of Magseed® is technically
easy and accurate in the majority of cases. Magseed® guided excision of
impalpable breast lesions is safe with comparable re-excision rates to those
published for wire guided procedures. Patient Reported Outcomes will be
collected in our unit.