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Chiari I malformation and neurofibromatosis type 1.

Richard Shane Tubbs1, S Lane Rutledge, Anna Kosentka

  • 1Pediatric Neurology, Children's Hospital, Birmingham, Alabama, USA.

Pediatric Neurology
|April 17, 2004
PubMed
Summary
This summary is machine-generated.

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Chiari I malformation and neurofibromatosis type 1 are associated conditions, not coincidental. This study found significant co-occurrence in pediatric patients, suggesting a shared developmental origin.

Area of Science:

  • Neurology
  • Genetics
  • Pediatrics

Background:

  • Single case reports link Chiari I malformation and neurofibromatosis type 1.
  • Large-scale studies examining this association are lacking.

Purpose of the Study:

  • To investigate the prevalence of neurofibromatosis type 1 in pediatric patients with Chiari I malformation.
  • To determine the incidence of Chiari I malformation in pediatric patients with neurofibromatosis type 1.

Main Methods:

  • Retrospective analysis of two pediatric patient groups.
  • Group I: 130 patients with Chiari I malformation undergoing surgery.
  • Group II: 198 patients evaluated for neurofibromatosis type 1.

Main Results:

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  • 5.4% of Chiari I malformation patients had neurofibromatosis type 1.
  • 8.6% of neurofibromatosis type 1 patients had Chiari I malformation.
  • These findings indicate a significant association.

    • Conclusions:

    • Chiari I malformation and neurofibromatosis type 1 are not coincidental but genuinely associated.
    • A shared early mesodermal dysgenesis may underlie both conditions.
    • This data may assist in identifying a genetic locus for Chiari I malformation.