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Accelerator Based Stereotactic Body Radiation Therapy after Surgery in Treating Patients with Early Stage Breast Cancer

Trial Status: active

This trial studies the side effects of accelerator based stereotactic body radiation therapy and to see how well it works after surgery in treating patients with early stage breast cancer. Whole breast radiation therapy is the standard of care after lumpectomy surgery. However, in women with very favorable tumors, accelerated partial breast irradiation (APBI) is safe and effective. The technique for APBI used in this trial is called stereotactic body radiation therapy (SBRT). SBRT uses special equipment to position a patient and deliver radiation to tumors with high precision. This method can kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue compared to other APBI techniques.