Baseline Post-Void Residual Urinary Volume Is Associated with Acute Genitourinary Toxicity After Five-Fraction Stereotactic Body Radiation Therapy for Localized Prostate Cancer

Background/Objectives: We investigated the association between baseline post-void residual urine volume (PVR) and acute genitourinary (GU) toxicity after prostate stereotactic body radiation therapy (SBRT).

Methods

We retrospectively analyzed 140 consecutive patients treated with 36.25 Gy in five every-other-day fractions. The primary endpoint was the maximum clinically assessed acute Grade 2 GU toxicity during treatment or within 90 days after SBRT.