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Related Experiment Videos

Brachytherapy for recurrent malignant astrocytoma

M Bernstein1, N Laperriere, J Glen

  • 1Division of Neurosurgery, Toronto Hospital, Ontario, Canada.

International Journal of Radiation Oncology, Biology, Physics
|December 1, 1994
PubMed
Summary

Interstitial brachytherapy offers a modest survival benefit for recurrent malignant astrocytoma patients. However, significant complications and frequent recurrence outside the treatment area necessitate careful patient selection.

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Area of Science:

  • Neuro-oncology
  • Radiation Oncology
  • Neurosurgery

Background:

  • Recurrent malignant astrocytoma presents a significant therapeutic challenge.
  • Limited effective treatment options exist for patients with recurrent high-grade gliomas.
  • Interstitial brachytherapy is explored as a salvage treatment modality.

Purpose of the Study:

  • To evaluate the efficacy of interstitial brachytherapy using iodine-125 implants in patients with recurrent malignant astrocytoma.
  • To assess survival outcomes and patterns of failure following brachytherapy.

Main Methods:

  • A cohort of 46 patients with recurrent malignant astrocytoma received stereotactic high-activity temporary iodine-125 implants.
  • Patients had prior treatment with surgery and external radiation; some received chemotherapy.

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  • Survival, complications, and recurrence patterns were analyzed.

    • Main Results:

    • Median survival following brachytherapy was 46 weeks, with most patients deceased.
    • Significant complications occurred in 11% of patients, and 26% required reoperation for radiation necrosis.
    • Local recurrence was observed in 13.6% of evaluable patients, with some distant failures.

    Conclusions:

    • Interstitial brachytherapy provides a modest survival prolongation for selected recurrent malignant astrocytoma patients.
    • Treatment is associated with significant complications and a high rate of reoperation.
    • Recurrence outside the brachy brachytherapy treatment volume is a notable concern.