Fig. 2From: Neoadjuvant radiotherapy of early-stage breast cancer and long-term disease-free survivalHRs of developing second primary tumors calculated from a multivariate Cox proportional hazards model. a Patients who underwent breast-conserving surgery. b Patients who underwent mastectomy. Shown are HRs, 95% CIs, and P values. n Total number of patients in each cohort, I Number of patients who received neodjuvant radiotherapy (RT) in each cohort, ER Estrogen receptorBack to article page