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Related Experiment Videos

Choroid plexus arteriovenous malformations.

Y Miyasaka1, K Yada, T Ohwada

  • 1Department of Neurosurgery, Kitasato University School of Medicine, Kanagawa.

Neurologia Medico-Chirurgica
|April 1, 1992
PubMed
Summary
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Arteriovenous malformations (AVMs) involving the choroid plexus often present with hemorrhage. Immediate postoperative angiography is crucial to detect residual AVMs and prevent dangerous rebleeding.

Area of Science:

  • Neurosurgery
  • Neuroradiology
  • Vascular Neurology

Background:

  • Arteriovenous malformations (AVMs) of the choroid plexus are rare vascular anomalies.
  • Understanding their classification and clinical presentation is vital for effective management.

Observation:

  • This study analyzed 24 choroid plexus AVMs, classifying them into plexal (n=11) and parenchymal (n=13) types.
  • A significant majority (83%) involved both choroid plexus and paraventricular parenchyma.
  • Intracranial hemorrhage, particularly intraventricular hemorrhage, was the most common presentation.

Findings:

  • The primary surgical challenge was unrecognized residual nidus, leading to postoperative hemorrhage.
  • Residual AVMs in the choroid plexus occurred in five parenchymal type cases, resulting in two deaths.

Related Experiment Videos

  • Residual plexal type AVMs were identified, supplied by the anterior choroidal artery.

    • Implications:

    • Immediate postoperative angiography under general anesthesia is recommended to identify any residual nidus.
    • This diagnostic approach aims to prevent potentially fatal postoperative hemorrhage.
    • Improved surgical vigilance and diagnostic protocols are essential for managing these complex AVMs.