Abstract
Background
The incidence of preoperatively identified multifocal and multicentric breast cancer is rising with improved sensitivity of imaging modalities. Based on retrospective, historic data, breast conservation in women with multiple tumors has been discouraged because of high rates of local regional recurrence (LRR). These studies, however, do not extrapolate to contemporary practice as they do not incorporate the use of modern therapies and surgical techniques. This study is designed to evaluate the feasibility of breast conservation in women with multiple breast primaries.
Materials and Methods
We retrospectively reviewed the charts of 22 women who underwent breast conservation surgery for 2 or more synchronous, ipsilateral cancers between 1998 and 2008. We extracted data including tumor size, nodal staging, receptor status, adjuvant therapies administered, and local–regional recurrence.
Results
A total of 22 patients were identified. Average follow up is 3.5 years. One patient (4.5%) experienced an in-breast recurrence. Both initial tumors in this patient were invasive ductal carcinoma, ER/PR, negative and HER2 positive. Time to LRR was 2.5 years.
Conclusions
Our data are consistent with those of recent studies in which multifocal/multicentric local regional recurrence in multicentric/multifocal breast is equivalent to that seen in women with unifocal cancer. The single local recurrence in this study occurred in a premenopausal women with ER/PR− disease who were HER2+. Prior retrospective studies have identified ER/PR− and HER2 overexpression as independent risk factors for recurrence following breast conservation. Additional prospective trials are warranted to better assess the oncologic safety of breast conservation in this population.
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Bauman, L., Barth, R.J. & Rosenkranz, K.M. Breast Conservation in Women with Multifocal-Multicentric Breast Cancer: Is It Feasible?. Ann Surg Oncol 17 (Suppl 3), 325–329 (2010). https://doi.org/10.1245/s10434-010-1247-1
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DOI: https://doi.org/10.1245/s10434-010-1247-1