{Reference Type}: Journal Article {Title}: A Case of Rectal Ulcer during Intensity Modulated Radiotherapy for Prostate Cancer Using Hydrogel Spacer. {Author}: Dinh TT;Schade GR;Liao JJ; {Journal}: Urol Pract {Volume}: 7 {Issue}: 2 {Year}: 2020 Mar 暂无{DOI}: 10.1097/UPJ.0000000000000071 {Abstract}: We report a case of a severely symptomatic rectal ulcer, a CTCAE (Common Terminology Criteria for Adverse Events) grade 3 complication, after intensity modulated radiotherapy for prostate cancer using the SpaceOAR® hydrogel spacer.