Home > E. Pathology by systems > Nervous system > meningocele

meningocele

Wednesday 12 January 2005

Definition: A meingocele is a type of spina bifida in which the spinal cord develops normally but the meninges protrude from a spinal opening. It is a saccular herniation of meninges and cerebrospinal fluid through a bony defect of the spine.

Types

Localization

- cranial meningocele

  • occipital meningocele

- thoracic meningocele
- lumbosacral meningocele
- lumbar meningocele
- thoracolumbar meningocele
- sacral meningocele
- anterior sacral meningocele

  • sacral defect with anterior meningocele (SDAM)
    • caudal dysgenesis

- panspinal meningocele

Associations

- hydrocephalus
- Arnold-CHiari malformation
- cloacal dysgenesis
- anomalies of neuronal migration

  • cerebral dysplasia
  • cerebellar dysplasia
  • polymicrogyria

- spinal cord malformations

  • syringomyelia
  • syringobulbia
  • hydromyelia
  • diastematomyelia
  • double or multiple central canal
  • diplomyylia
  • tethered cord

- triploidy
- trisomy 18
- caudal regression syndrome
- TRAP syndrome (twin reversed arterial perfusion)
- Knobloch syndrome

See also

- neural tube defects (NTDs)

  • encephalocele
  • myelomeningocele

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