ESTRO 2025 - Abstract Book

S1950

Clinical - Urology

ESTRO 2025

Bowel loop + 1.5cm (BL+1.5cm)

Results: A total of 102 patients treated with WP-SBRT were screened. Of these, while none of the patients had grade 3 bowel toxicity, 23 (22.5%) patients had grade 1-2 acute enteritis, and 23 patients without were selected as cases and controls respectively. The median volume was the smallest for the large bowel loop (median volume of 328cc for cases and 271cc for controls) and largest for the bowel bag (median volume of 3088cc for cases and 2867cc for controls).

On visual assessment, the DVH was similar for both cases and controls for all the delineation methods studied.