Abstract
Background and purpose Urinary toxicity plays a major role in the quality of life (QOL) of patients treated with external beam radiotherapy as primary therapy for prostate cancer. In this study we report on: (1) Incidence of acute and late GU toxicity after intensity modulated radiotherapy (IMRT) for prostate cancer at Ghent University Hospital (GUH). (2) Time evolution of pre-IMRT and IMRT-induced acute and late GU toxicity. Materials and methods At GUH, 260 patients with a follow-up of ⩾12 months were treated with IMRT for prostate cancer. The incidence and evolution of GU toxicity were recorded. Results Acute grades 3, 2 and 1 GU toxicity occurred in 8%, 42% and 42% of the patients, respectively. Late grades 3, 2 and 1 GU toxicity occurred in 3%, 19% and 40% of the patients, respectively. During therapy baseline grade 1 symptoms increased into grade 2 acute GU toxicity in 48%. After 1 and 2 years, 60% and 70% of the patients, respectively, had less GU symptoms when compared to the pre-treatment status. Conclusion IMRT induces mild GU toxicity. There is an improvement in pre-IMRT obstructive miction disorders.
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