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Brachytherapy for recurrent single brain metastasis

M Bernstein1, A Cabantog, N Laperriere

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

The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques
|February 1, 1995
PubMed
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High-activity iodine-125 brachytherapy shows promise for patients with recurrent single brain metastasis. Further randomized studies are necessary to confirm the benefits of this advanced treatment.

Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Oncology

Background:

  • Malignant brain tumors often recur after initial treatment.
  • Recurrent brain metastases pose a significant clinical challenge.
  • Limited treatment options exist for patients with recurrent single brain metastasis.

Purpose of the Study:

  • To evaluate the efficacy and safety of high-activity iodine-125 brachytherapy for recurrent single brain metastasis.
  • To assess patient outcomes following stereotactic iodine-125 implant for recurrent brain tumors.

Main Methods:

  • Retrospective analysis of ten patients with recurrent single brain metastasis treated with iodine-125 brachytherapy.
  • Patients had prior craniotomy, tumor resection, and whole-brain radiation therapy.
  • Brachytherapy involved high-activity iodine-125 seeds with a minimum dose of 70 Gy.

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Main Results:

  • Two patients survived long-term (183 and 324 weeks post-implant).
  • Eight patients died, with causes including pulmonary embolism, tumor recurrence, and systemic metastases.
  • Median time to recurrence after initial treatment was 35 weeks.

Conclusions:

  • High-activity iodine-125 brachytherapy may benefit selected patients with recurrent single brain metastasis.
  • Larger, randomized clinical trials are needed to establish definitive efficacy.
  • Further research should explore optimal patient selection and treatment parameters.