Less to Hold - A Comparison of Bladder Toxicities (Side Effects) in Patients Undergoing Prostate Radiotherapy Between Patients Treated With Empty Bladder and Those on a Drinking Protocol.

50 patients receiving radical radiotherapy to the prostate were randomised using closed envelope technique 1:1 into 2 groups. Group A followed the conventional drinking protocol at our centre (200ml prior to treatment) and group B were treated with an empty bladder. Baseline, end of treatment and 6 week follow up scores were prospectively collected for International prostate Symptom Score(IPSS), Late Effects Normal Tissue Task Force - Subjective, Objective, Management, Analytic (LENT SOMA) bowel toxicity and quality of life questionnaires. The investigators also looked at bowel and bladder Dose Volume Histogram (DVH) to ensure constraints were met.