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Stereotactic Radiosurgery for Gynecologic Cancer
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Radical Extirpation With Intraoperative Radiotherapy for Locally Recurrent Gynecologic Cancer: An Institutional

Ritchie Delara1, Jie Yang1, Elena Suárez-Salvador1,2

  • 1Department of Obstetrics and Gynecology.

Mayo Clinic Proceedings. Innovations, Quality & Outcomes
|November 29, 2021
PubMed
Summary

Complete tumor resection in recurrent gynecologic cancers significantly improves progression-free survival (PFS) and overall survival (OS), irrespective of intraoperative radiotherapy (IORT) administration. Achieving negative surgical margins is crucial for better patient outcomes.

Keywords:
EBRT, external beam radiotherapyIORT, intraoperative radiotherapyOS, overall survivalPFS, progression-free survival

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Area of Science:

  • Gynecologic Oncology
  • Surgical Oncology
  • Radiation Oncology

Background:

  • Locally recurrent gynecologic cancers pose a significant treatment challenge.
  • Curative-intent management often involves complex surgical procedures and radiotherapy.
  • The role of intraoperative radiotherapy (IORT) in these settings requires further clarification.

Purpose of the Study:

  • To evaluate survival outcomes in patients with recurrent gynecologic cancers.
  • To assess the impact of radical extirpation, perioperative external beam radiotherapy, and IORT.
  • To determine the influence of surgical margin status on patient prognosis.

Main Methods:

  • Retrospective cohort analysis of 44 patients with recurrent gynecologic cancer.
  • Treatments included radical extirpation (pelvic exenteration, endopelvic resection, etc.) and radiotherapy.
  • Intraoperative radiotherapy (IORT) was administered to 84.1% of patients.

Main Results:

  • Complete tumor resection with negative surgical margins correlated with significantly higher 3-year PFS (51.8%) and OS (62.9%).
  • Progression-free survival (PFS) and overall survival (OS) did not differ significantly between patients with negative margins who received or did not receive IORT.
  • Grade 3 or higher toxicities occurred in 27.0% of patients receiving IORT, with one sepsis-related death.

Conclusions:

  • Complete tumor resection during radical extirpation is the primary determinant of improved PFS and OS.
  • IORT administration did not significantly impact survival outcomes in patients with negative surgical margins.
  • Achieving negative surgical margins is paramount for optimizing survival in recurrent gynecologic cancers.