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Related Experiment Videos

Cavernous malformations of the optic chiasma

M Shibuya1, M K Baskaya, K Saito

  • 1Department of Neurosurgery, Nagoya University School of Medicine, Japan.

Acta Neurochirurgica
|January 1, 1995
PubMed
Summary

Cavernous malformations of the optic chiasm, though rare, can cause vision loss. Early diagnosis via MRI and surgical excision offers the best chance for visual recovery.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Vascular Neurology

Background:

  • Optic chiasm cavernous malformations are rare vascular lesions.
  • These malformations can present with visual disturbances due to chiasmal compression or hemorrhage.

Observation:

  • Two cases of optic chiasm cavernous malformation are presented.
  • Patients exhibited progressive or subacute chiasmal syndromes.
  • Magnetic resonance imaging (MRI) revealed characteristic features, enabling pre-operative diagnosis despite angiographic occultation.

Findings:

  • Total surgical excision was performed in both reported cases.
  • Visual function improved post-operatively, with one patient showing marked improvement.
  • Review indicates chiasmal cavernous malformations hemorrhage more frequently than intracranial ones.

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Implications:

  • Early diagnosis of optic chiasm cavernous malformations is crucial.
  • Total excision is the recommended treatment to prevent further visual deficits.
  • Understanding the surgical plane provided by gliosis aids in safe and complete resection.