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Infectious acute hemicerebellitis.

Angels García-Cazorla1, José Antonio Oliván, Cristina Pancho

  • 1Pediatric Neurology Unit, Hospital Sant Joan de Déu, Passeig Sant Joan de Déu, Barcelona, Spain. agarcia@hsjdbcn.org

Journal of Child Neurology
|July 1, 2004
PubMed
Summary

This case study highlights hemicerebellitis, a rare condition causing unilateral cerebellar symptoms in a child. Early MRI is crucial for diagnosing this condition, which typically resolves with minimal lasting effects.

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Area of Science:

  • Pediatric Neurology
  • Neuroimaging
  • Cerebellar Disorders

Background:

  • Hemicerebellitis is a rare condition characterized by unilateral cerebellar inflammation.
  • It can present with diverse neurological symptoms, including ataxia and hemiparesis.
  • Understanding its pathophysiology and diagnostic markers is essential for effective management.

Observation:

  • A 5-year-old girl initially presented with encephalitis, followed by hemiataxia, unilateral dysmetria, and hemiparesis.
  • Brain MRI revealed high T2-weighted signals in the ipsilateral cerebellar cortex, with subsequent hemiatrophy and cortical gliosis.
  • Clinical follow-up showed a favorable outcome with residual mild motor coordination deficits.

Findings:

  • The case demonstrates the characteristic unilateral cerebellar involvement seen in hemicerebellitis.

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  • Magnetic resonance imaging (MRI) is superior to computed tomography (CT) for diagnosing this condition.
  • Follow-up imaging often reveals cerebellar hemiatrophy, suggesting permanent structural changes.

    • Implications:

    • This case underscores the importance of considering hemicerebellitis in children with asymmetric cerebellar signs.
    • Prompt MRI is vital for accurate diagnosis and differentiating it from other neurological conditions.
    • Further research into the pathophysiology of unilateral cerebellar involvement is warranted.