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Six-year experience: long-term disease control outcomes for partial breast irradiation using MammoSite balloon
Jennifer L Harper1, John M Watkins, A Jason Zauls
1Department of Radiation Oncology, Medical University of South Carolina, Hollings Cancer Center, 169 Ashley Ave. MSC 318 Charleston, SC 29425, USA. harperjl@musc.edu
Background:
This report describes estimated 4-year tumor bed and ipsilateral breast recurrence-free intervals, event-free survival, disease-specific survival, and overall survival in a cohort of MammoSite brachytherapy (MBT) patients with mature follow-up treated at a single institution over a 6-year period.
Methods And Materials:
An analysis of MBT cases was performed by using a prospectively collected quality-assurance database, departmental chart review, and electronic medical records. Patient-, tumor-, treatment-, and outcome-specific data were extracted and recorded into a research database. Patients were eligible for inclusion in this analysis if they were at least 6 months post-MBT.
Results:
From May 2002 through March 2008, 111 MBT patients have been treated and were eligible for the present analysis. With a median follow-up of 46 months, the estimated 4-year outcomes for the entire cohort were tumor bed control 99%, ipsilateral breast control 95%, event-free survival 88%, disease-specific survival 97%, and overall survival 92%.
Conclusions:
The present study shows low rates of local and ipsilateral breast disease failure in a well-defined cohort of MBT patients with mature follow-up.
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