AUTHOR=Repka Michael C. , Creswell Michael , Lischalk Jonathan W. , Carrasquilla Michael , Forsthoefel Matthew , Lee Jacqueline , Lei Siyuan , Aghdam Nima , Kataria Shaan , Obayomi-Davies Olusola , Collins Brian T. , Suy Simeng , Hankins Ryan A. , Collins Sean P. TITLE=Rationale for Utilization of Hydrogel Rectal Spacers in Dose Escalated SBRT for the Treatment of Unfavorable Risk Prostate Cancer JOURNAL=Frontiers in Oncology VOLUME=12 YEAR=2022 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2022.860848 DOI=10.3389/fonc.2022.860848 ISSN=2234-943X ABSTRACT=

In this review we outline the current evidence for the use of hydrogel rectal spacers in the treatment paradigm for prostate cancer with external beam radiation therapy. We review their development, summarize clinical evidence, risk of adverse events, best practices for placement, treatment planning considerations and finally we outline a framework and rationale for the utilization of rectal spacers when treating unfavorable risk prostate cancer with dose escalated Stereotactic Body Radiation Therapy (SBRT).