Shorter Course Radiation for the Treatment of Breast Cancer That Has Spread to Lymph Nodes

Inclusion criteria

• ✓. Adult women (≥18 years old) with breast cancer who have undergone surgery for their primary breast tumor (either lumpectomy or mastectomy +/- reconstruction) and are confirmed to have involved lymph nodes on surgical pathology.
• ✓. Patient who have undergone either a total mastectomy or a lumpectomy are eligible.
• ✓. Eligible women include AJCC (American Joint Committee on Cancer) 7th ed. Stage cN0 or cN1 subsequently staged after surgery as Stage pIB (N1mic), pIIA, pIIB, pIIIA, pIIIB, or N3a (10 or more axillary nodes) only: note that ypN0 will also be eligible if pathologic confirmation of nodal involvement was documented prior to neoadjuvant chemotherapy and the patient was found to be node-negative at the time of surgery. Note that women less than 50 years of age, women who received chemotherapy, patients staged as pN0 (i+ or mol+), and large-breasted women are eligible for enrollment.
• ✓. The patient must have recovered from surgery with the incision completely healed and no signs of infection. If adjuvant chemotherapy was administered, chemotherapy-related toxicity that may interfere with delivery of radiation therapy should have resolved. The patient must have an ECOG performance status of 0 or 1 (KPS \>70%).
• ✓. The interval between the last surgery for breast cancer (including re-excision of margins) and randomization must be no more than 180 days if chemotherapy is not delivered adjuvantly. If adjuvant chemotherapy was administered, the interval between the last chemotherapy treatment and randomization must be no more than 180 days.
• ✓. Before the patient is enrolled, the consent form, including any addenda, must be signed and dated by the patient and the person who explains the study to that patient.
• ✓. Subjects will have the ability to understand, and the willingness to sign a written informed consent document.

Exclusion criteria