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Capsular hypesthetic ataxic hemiparesis.

C M Helgason1, A C Wilbur

  • 1Department of Neurosciences, University of Illinois College of Medicine, Peoria 61656-1649.

Stroke
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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Hypesthetic ataxic hemiparesis is linked to larger infarcts in the internal capsule, often affecting the anterior choroidal artery territory. Magnetic resonance imaging improves detection compared to computed tomography alone.

Area of Science:

  • Neurology
  • Radiology
  • Neuroimaging

Background:

  • Hypesthetic ataxic hemiparesis is a clinical syndrome characterized by sensory and motor deficits.
  • Lacunar infarcts are small strokes typically affecting deep brain structures.

Purpose of the Study:

  • To investigate the neuroimaging findings in patients with hypesthetic ataxic hemiparesis.
  • To determine the precise location and size of infarcts associated with this condition.

Main Methods:

  • Computed tomography (CT) and magnetic resonance imaging (MRI) were performed on 23 patients.
  • Imaging data were analyzed to identify infarcts in the internal capsule and adjacent areas.

Main Results:

  • Twenty-two patients had infarcts in the contralateral posterior limb of the internal capsule, often extending into the paraventricular region or thalamus.

Related Experiment Videos

  • Infarcts associated with hypesthetic ataxic hemiparesis were larger than typical lacunar strokes and frequently located in the anterior choroidal artery territory.
  • MRI provided superior detection of infarcts compared to CT.

    • Conclusions:

    • Hypesthetic ataxic hemiparesis is associated with larger infarcts than pure motor or sensory strokes.
    • The posterior medial superior territory of the anterior choroidal artery is a common location for these infarcts.
    • Combined CT and MRI are recommended for comprehensive evaluation.