IMPORTANCE Based on randomized evidence expert guidelines in 2011 endorsed shorter hypofractionated whole breast irradiation (WBI) for selected patients with early-stage breast cancer and permitted hypofractionated WBI for other patients. without prior chemotherapy or axillary lymph node involvement and (2) the hypofractionation-permitted cohort (n = 6719) included patients younger than 50 years or those with… Continue reading IMPORTANCE Based on randomized evidence expert guidelines in 2011 endorsed shorter