Patients will be treated with a novel IMRT/VMAT-based accelerated partial breast irradiation regimen.
The lumpectomy bed will receive a total of 26 Gy in 5 fractions, with 1 fraction delivered per day. Ideally, the course of radiation therapy would be completed over 5 consecutive treatment days. Treatment must begin within 12 weeks of lumpectomy or re-excision of surgical margins and must be completed within 10 calendar days.
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