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Stereotactic linear radiosurgery for cavernous angiomas

R A Stea1, L Schicker, G A King

  • 1Department of Neurosurgery, SUNY Health Science Center Syracuse, USA.

Stereotactic and Functional Neurosurgery
|January 1, 1994
PubMed
Summary
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Stereotactic linear radiosurgery (SLR) offers a promising treatment for symptomatic cavernous angiomas (CA) in the thalamus and brainstem. This approach led to neurological improvement and lesion changes in most patients, with one early post-treatment hemorrhage.

Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Neuroradiology

Background:

  • Symptomatic cavernous angiomas (CA) in the thalamus and brainstem present management challenges.
  • Recurrent hemorrhage and progressive neurological decline are common after initial bleeding from these lesions.

Purpose of the Study:

  • To evaluate the efficacy and safety of stereotactic linear radiosurgery (SLR) for symptomatic thalamic and brainstem cavernous angiomas.
  • To assess neurological outcomes and radiological changes following SLR treatment.

Main Methods:

  • A cohort of 12 patients with symptomatic CAs underwent SLR.
  • Treatment planning utilized MRI/CT imaging with a mean delivered dose of 2,167 cGy.
  • Median follow-up was 27 months, with serial MRI assessments.

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Main Results:

  • All 12 patients demonstrated neurological improvement post-SLR.
  • MRI revealed lesion shrinkage and signal characteristic conversion to methemoglobin in most patients.
  • One patient experienced an early hemorrhage 4.5 months after SLR.

Conclusions:

  • Stereotactic linear radiosurgery is a viable treatment option for symptomatic thalamic and brainstem cavernous angiomas.
  • SLR can lead to favorable neurological outcomes and positive radiological changes.
  • While generally safe, the risk of early post-treatment hemorrhage requires consideration.