SpaceOAR hydrogel distribution and early complications in patients undergoing radiation therapy for prostate cancer.

Objectives: Hydrogel spacers aim to separate the rectum from the prostate during radiation therapy for patients with prostate cancer to decrease the radiation dose and thus toxicity to the rectum. The aim of this study was to evaluate the distribution of the hydrogel spacer between the rectum and the prostate, to assess for hydrogel rectal wall infiltration and to assess for immediate complications.

Methods: Retrospective study of 160 patients who had undergone hydrogel spacer placement.