Prognostic Impact of Lymph Node Yield in a Phase III Clinical Trial (NRG/RTOG 9601) of Prostate Cancer Patients Treated With Salvage Radiation Following Prostatectomy

Although lymph node yield in NRG/RTOG 9601 did not show association with adverse outcomes in the entire cohort or either arm alone, there was significant association between lymph node yield and adverse outcomes when seminal vesicle invasion was present. The therapeutic benefit of extensive lymph node dissection remains uncertain but could be more relevant in higher risk patients.