What is the efficacy of external-beam radiotherapy (EBRT) in the treatment of breast cancer?

Updated: Feb 04, 2021
  • Author: Pavani Chalasani, MD, MPH; Chief Editor: John V Kiluk, MD, FACS  more...
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An observational study using data from the SEER–Medicare linked database on 35,947 women aged 66 years and older who had invasive breast cancer (79.9%) or DCIS (20.1%) determined that standard EBRT was associated with a higher 5-year breast preservation rate than either lumpectomy alone or brachytherapy was. [117, 118] However, the study data did not reflect use of the newest forms of brachytherapy, a limitation that may reduce the real-world applicability of these findings.

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