Implications on margin positivity rates following the introduction of an oncoplastic service to a university hospital breast unit
Association of Breast Surgery ePoster Library. Kankam H. 05/15/17; 166224; P159
Mr. HKN Kankam
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Abstract
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Introduction: Larger excisions inherent to oncoplastic breast surgery (OBS) may increase probability of clear margins, irrespective of margin distance. We present our initial experience following the introduction of OBS to a university hospital.
Methods: Single oncoplastic surgeon data between April 2014 (coinciding with margin policy change from 2 to 0mm) and September 2016 for simple wide local excision (WLE) or OBS was reviewed. Relative incidence of margin positivity was estimated at three margin distances. Statistical tests performed were Median (k samples) and chi-squared.
Conclusions: Whilst there was no significant difference in margin positivity irrespective of margin distance, OBS alone reduced margin positivity by 10.2%, 12.5% and 11.2% with 2, 1 and 0mm margins respectively. This, despite median OBS pre-and post-operative sizes being 50% larger (versus WLE), thus reducing re-excisions/mastectomies; and expanding patient choices whilst maintaining and frequently improving aesthetics.
Methods: Single oncoplastic surgeon data between April 2014 (coinciding with margin policy change from 2 to 0mm) and September 2016 for simple wide local excision (WLE) or OBS was reviewed. Relative incidence of margin positivity was estimated at three margin distances. Statistical tests performed were Median (k samples) and chi-squared.
Conclusions: Whilst there was no significant difference in margin positivity irrespective of margin distance, OBS alone reduced margin positivity by 10.2%, 12.5% and 11.2% with 2, 1 and 0mm margins respectively. This, despite median OBS pre-and post-operative sizes being 50% larger (versus WLE), thus reducing re-excisions/mastectomies; and expanding patient choices whilst maintaining and frequently improving aesthetics.
Introduction: Larger excisions inherent to oncoplastic breast surgery (OBS) may increase probability of clear margins, irrespective of margin distance. We present our initial experience following the introduction of OBS to a university hospital.
Methods: Single oncoplastic surgeon data between April 2014 (coinciding with margin policy change from 2 to 0mm) and September 2016 for simple wide local excision (WLE) or OBS was reviewed. Relative incidence of margin positivity was estimated at three margin distances. Statistical tests performed were Median (k samples) and chi-squared.
Conclusions: Whilst there was no significant difference in margin positivity irrespective of margin distance, OBS alone reduced margin positivity by 10.2%, 12.5% and 11.2% with 2, 1 and 0mm margins respectively. This, despite median OBS pre-and post-operative sizes being 50% larger (versus WLE), thus reducing re-excisions/mastectomies; and expanding patient choices whilst maintaining and frequently improving aesthetics.
Methods: Single oncoplastic surgeon data between April 2014 (coinciding with margin policy change from 2 to 0mm) and September 2016 for simple wide local excision (WLE) or OBS was reviewed. Relative incidence of margin positivity was estimated at three margin distances. Statistical tests performed were Median (k samples) and chi-squared.
Conclusions: Whilst there was no significant difference in margin positivity irrespective of margin distance, OBS alone reduced margin positivity by 10.2%, 12.5% and 11.2% with 2, 1 and 0mm margins respectively. This, despite median OBS pre-and post-operative sizes being 50% larger (versus WLE), thus reducing re-excisions/mastectomies; and expanding patient choices whilst maintaining and frequently improving aesthetics.
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