ESTRO 2025 - Abstract Book

S1913

Clinical - Urology

ESTRO 2025

Conclusion: Prostate volume is not associated with SABR-induced toxicity regardless CT or MR-Linac based treatment. Higher late GU toxicity in MR-Linac cohort could be related to better toxicity annotation or small sample size.

Keywords: Does prostate volume affect SABR-induced toxicity?

References: 1-Benitez CM, Steinberg ML, Cao M, Qi XS, Lamb JM, Kishan AU, Valle LF. MRI-Guided Radiation Therapy for Prostate Cancer: The Next Frontier in Ultrahypofractionation. Cancers . 2023; 15(18):4657. https://doi.org/10.3390/cancers15184657. 2-Intensity-modulated radiotherapy versus stereotactic body radiotherapy for prostate cancer (PACE-B): 2-year toxicity results from an open-label, randomised, phase 3, non-inferiority trial, Tree, Alison CLartigau, E et al.The Lancet Oncology, Volume 23, Issue 10, 1308 - 1320.

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Digital Poster Two- vs. five-fraction stereotactic body radiation therapy for prostate cancer: the TOFFEE individual patient data meta-analysis of prospective trials Cristian Udovicich 1 , Patrick Cheung 1 , William Chu 1 , Hans Chung 1 , Jay Detsky 1 , Stanley Liu 1 , Gerard Morton 1 , Ewa Szumacher 1 , Chia-Lin Tseng 1 , Danny Vesprini 1 , Wee Loon Ong 1,2 , Thomas Kennedy 1 , Melanie Davidson 1 , Ananth Ravi 1 , Merrylee McGuffin 1 , Liying Zhang 1 , Alexandre Mamedov 1 , Andrea Deabreu 1 , Meghan Kulasingham-Poon 1 , Andrew Loblaw 1