Toxicity of pelvic lymph node irradiation with intensity modulated radiation therapy for high-risk and locally advanced prostate cancer: a national population-based study using patient-reported outcomes.

Little is known about the toxicity of additional pelvic lymph node irradiation in men receiving intensity-modulated radiotherapy (IMRT) for prostate cancer. The aim of this study was to compare patient-reported outcomes following IMRT to the prostate only (PO-IMRT) versus the prostate and pelvic lymph nodes (PPLN-IMRT).