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[Symptomatic Chiari type II malformation]

J F Salomão1, A R Bellas, R D Leibinger

  • 1Departamento de Cirurgia Pediátrica, Instituto Fernandes Figueira-Fundação Oswaldo Cruz (M.S.-Fiocruz), Rio de Janeiro.

Arquivos De Neuro-Psiquiatria
|August 1, 1998
PubMed
Summary
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Chiari type II malformation in infants with myelomeningocele presents differently by age. Prompt diagnosis and surgery improve outcomes, but mortality remains high in infants under six months.

Area of Science:

  • Neurology
  • Pediatrics
  • Neurosurgery

Context:

  • Chiari type II malformation is a primary cause of mortality in infants with myelomeningocele.
  • This study examines 17 cases of symptomatic Chiari type II malformation in two age-dependent groups.

Purpose:

  • To analyze the distinct clinical presentations and surgical outcomes of Chiari type II malformation in neonates/infants versus older children.
  • To highlight the importance of timely diagnosis and surgical intervention.

Summary:

  • Group I (infants <1 year) presented with cranial nerve/brainstem dysfunction (e.g., vocal cord paralysis, apnea).
  • Group II (older children) presented insidiously with neck pain and cerebellar signs.
  • Surgical treatment (shunt, posterior fossa decompression) showed better outcomes in older children; infants <6 months had a 46.1% mortality rate.

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Impact:

  • Early surgical intervention is crucial for favorable outcomes in pediatric Chiari type II malformation.
  • Understanding age-specific presentations can guide prompt diagnosis and treatment strategies.
  • This research underscores the critical need for timely management to reduce mortality in affected infants.