Long-term follow-up of Cancer and Leukemia Group B (CALGB) trial 9343 confirmed and extended 5-year results that in women age ≥ 70 years with clinical stage I, estrogen receptor (ER)-positive breast cancer treated with lumpectomy followed by tamoxifen, “irradiation adds no significant benefit in...
Numerous randomized trials have demonstrated that whole-breast irradiation plays an important role after breast-conserving surgery for invasive breast cancer. A recent meta-analysis of these trials indicated that whole-breast irradiation decreased the risk of total breast cancer relapse events and...