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Breast brachytherapy: North American experience.
Frank A Vicini1, Douglas W Arthur
1Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI 48073-6769, USA. fvicini@beaumont.edu
Seminars in Radiation Oncology
|April 6, 2005
Summary
Accelerated partial breast irradiation (APBI) using interstitial brachytherapy can be a safe and effective alternative adjuvant treatment for early-stage breast cancer. Key factors for success include negative margins, precise target definition, and rigorous quality assurance.
Area of Science:
- Oncology
- Radiation Oncology
- Surgical Oncology
Background:
- Accelerated partial breast irradiation (APBI) is explored as an alternative adjuvant treatment post-lumpectomy for early-stage breast cancer.
- Rationale stems from understanding breast cancer spread and recurrence patterns after breast-conserving therapy.
Purpose of the Study:
- To review the North American experience with interstitial brachytherapy for APBI.
- To identify factors differentiating successful (low failure) from unsuccessful (high failure) APBI programs.
Main Methods:
- Review of North American studies utilizing interstitial brachytherapy for APBI.
- Analysis of factors including surgical margins, target volume definition, and quality assurance protocols.
Main Results:
- Studies with low failure rates consistently required microscopically negative surgical margins.
- Successful programs defined the target volume as the lumpectomy cavity plus a 1- to 2-cm margin.
- Rigorous quality assurance programs were crucial for ensuring target coverage in low-failure studies.
Conclusions:
- APBI brachytherapy programs incorporating negative margins, precise target definition, and robust quality assurance show significant potential.
- These components can help overcome barriers to women choosing standard breast-conserving therapy.