Impacted cisterna magna without syringomyelia associated with spastic paraparesis: case report

Arq Neuropsiquiatr. 2006 Sep;64(3A):672-5. doi: 10.1590/s0004-282x2006000400030.


We report on a 49 year old man with impacted cisterna magna without the presence of syringohydromyelie (SM). The clinical picture was characterized by spastic paraparesis. Magnetic resonance imaging depicted a cisterna magna filled by the cerebellar tonsils. Six months after osteodural-neural decompression of the posterior fossa there was resolution of neurological symptoms and signs with the exception of hyperactive patellar and Achilles reflexes.

Publication types

  • Case Reports

MeSH terms

  • Arnold-Chiari Malformation / complications
  • Arnold-Chiari Malformation / diagnosis*
  • Arnold-Chiari Malformation / surgery
  • Cisterna Magna*
  • Decompression, Surgical
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • Paraparesis, Spastic / diagnosis*
  • Paraparesis, Spastic / etiology
  • Paraparesis, Spastic / surgery