Accelerated partial breast irradiation

Area of Science:

• Oncology
• Radiation Oncology
• Surgical Oncology

Background:

• Breast cancer treatment options include lumpectomy with radiation or mastectomy.
• Long-term data support lumpectomy with whole-breast radiation for reducing recurrence and improving survival.
• Accelerated partial breast irradiation (APBI) is an alternative delivering radiation to the tumor bed, sparing healthy tissue and shortening treatment time.

Purpose of the Study:

• To evaluate the safety and efficacy of APBI in breast cancer treatment.
• To assess the role of APBI in comparison to traditional radiation therapy.
• To determine if APBI can be established as a standard of care.

Main Methods:

• Review of 20-year data on lumpectomy with full-breast radiation therapy.
• Analysis of studies on various APBI techniques, including balloon-based brachytherapy.
• Assessment of published data from single-institution, nonrandomized studies on APBI.

Main Results:

• Long-term data confirm the safety and efficacy of lumpectomy plus whole-breast radiation.
• APBI significantly reduces treatment duration compared to conventional radiotherapy (days vs. weeks).
• Published APBI data are limited by selection bias and lack of large, randomized trials, restricting its validation.

Conclusions:

• Lumpectomy with whole-breast radiation therapy remains a well-established breast cancer treatment.
• Widespread adoption of APBI has outpaced robust clinical trial evidence.
• Further high-quality, randomized clinical trials are necessary to establish APBI as a standard of care for breast cancer.