Wu CC, et al. - This study was designed to demonstrate the utility of a rectal balloon during treatment in decreasing vaginal displacement, limiting rectal dose, and limiting acute and late toxicities in patients receiving intensity-modulated radiotherapy (IMRT) for postoperative gynecological malignancies. Findings suggested that RB for gynecological patients receiving IMRT in the postoperative setting could limit V40 rectal dose and vaginal displacement. Although V30 constraints were not met, patients indicated limited acute and late toxicities. They recommended further studies to validate these findings.