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Related Experiment Videos

[Neuroembryologic considerations on the so-called malformative syringomyelia].

M Catala1

  • 1Service d'Histologie, Embryologie et Cytogénétique, Groupe Hospitalier Pitié-Salpêtrière, Paris.

Neuro-Chirurgie
|July 27, 1999
PubMed
Summary

Syringomyelia, fluid-filled spinal cord cavities, are typically secondary to posterior fossa abnormalities like Chiari malformation. This research suggests syringomyelia is a deformation, not a primary malformation, often linked to genetic factors influencing skull development.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pathology

Background:

  • Syringomyelia involves fluid-filled spinal cord cavities, often linked to posterior fossa shape abnormalities.
  • Neuropathological analysis differentiates ependymal-lined cavities from other spinal cord lesions.
  • Chiari abnormalities (types I and II) are frequently associated with syringomyelia.

Purpose of the Study:

  • To investigate the origin of syringomyelia, distinguishing between primary malformations and secondary deformations.
  • To explore the relationship between posterior fossa abnormalities and spinal cord cavity formation.
  • To understand the potential genetic underpinnings of Chiari abnormalities contributing to syringomyelia.

Main Methods:

  • Review of neuroradiological and neuropathological findings in syringomyelia cases.

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  • Comparison of neuropathological data with embryological development.
  • Analysis of genetic factors implicated in posterior fossa development in experimental models.

    • Main Results:

    • Syringomyelia is generally a secondary deformation of a normally formed spinal cord.
    • Myelocytocele represents a rare primary malformation.
    • Chiari abnormalities, characterized by a small posterior fossa, are the most common associated finding.

    Conclusions:

    • Syringomyelia is typically a secondary consequence of distant causes, most commonly Chiari malformation.
    • Genetic factors, such as Hox genes, may influence posterior fossa development and indirectly lead to syringomyelia.
    • Understanding the etiology is crucial for managing this spinal cord condition.