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[Colliculus hemorrhage]

W Bolzani1, F Rognone, F Savoldi

  • 1Fondazione, Istituto neurologico C. Mondino, IRCCS, Pavia.

Revue Neurologique
|August 1, 1996
PubMed
Summary
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This study details a rare mesencephalic hematoma affecting the quadrigeminal plate. Understanding these specific brain hemorrhages is crucial for diagnosing associated neurological deficits.

Area of Science:

  • Neurology
  • Neuroimaging
  • Vascular Neurology

Background:

  • Mesencephalic hematomas are rare, with few reported cases involving the quadrigeminal plate.
  • Previous literature documents cases of superior and inferior colliculus hematomas.

Observation:

  • This report presents a unique case of mesencephalic hematoma localized exclusively to the quadrigeminal plate.
  • Such lesions often occur secondary to pontine or anterior mesencephalic hemorrhages.

Findings:

  • Potential causes include cryptic malformations or small hemorrhages within the quadrigeminal plate's arterial system.
  • Inferior colliculus hematomas are associated with trochlear nerve palsy, contralateral hemiparesthesiae, and acuphenes.
  • Superior colliculus lesions manifest as upgaze palsy, blurred vision, dizziness, and facial paresthesiae.

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Implications:

  • The distinct clinical presentations correlate with the specific location (superior vs. inferior colliculus) of the hematoma.
  • Further research into the vascular basis of these lesions may elucidate the pathogenesis of associated neurological symptoms.