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The role for vaginal cuff brachytherapy boost after external beam radiation therapy in endometrial cancer
Timothy Griffith1, Chika Nwachukwu2, Kevin Albuquerque2
1Department of Radiation Oncology, Huntsman Cancer Hospital, Salt Lake City, Utah, USA.
Purpose:
To evaluate the role and technique of a vaginal cuff brachytherapy (VB) boost to adjuvant external beam (EB) radiation for endometrial cancer through a systematic review.
Methods And Materials:
Relevant trials were identified through a systematic search of the literature.
Results:
A total of 21 prospective and retrospective studies which had a patient cohort undergoing EB + VB was identified to evaluate for rates of vaginal and pelvic recurrences, overall survival, and toxicity. Additional database studies were utilized to demonstrate differences in local control and overall survival between EB and EB + VB.
Conclusions:
While there is limited prospective evidence to guide the use of a VB boost after EB, the evidence suggests that patients with a higher risk of a vaginal recurrence such as those with cervical stromal involvement in select Stage III patients may derive local control and survival benefits from a VB boost. Additional individual risk factors such as grade, histology, extent of invasion, margin status, age, and the use of lower doses of EB should be considered when deciding when to add a VB boost.
