 OUTLINE: This is a multicenter, dose-escalation study of radiotherapy. Patients are stratified according to number of risk factors 1 vs 2-3, comorbidity ACE-27 grade 2 vs 2, and radiotherapy RT modality dose-escalated external-beam RT EBRT vs EBRT and low-dose rate brachytherapy boost vs EBRT and high-dose rate brachytherapy boost. Patients are randomized to 1 of 2 treatment arms. 