Cerebellar tonsillar descent mimicking Chiari malformation

Rachel J. Park, Sunil Unnikrishnan, Joel Berliner, John Magnussen, Shinuo Liu, Marcus A. Stoodley*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
166 Downloads (Pure)

Abstract

Chiari I malformation has been defined as cerebellar tonsillar descent greater than 5 mm below the foramen magnum. Suboccipital decompression remains the mainstay of treatment for symptomatic patients. Other conditions sometimes have imaging features that mimic Chiari I malformation. These patients are at risk of misdiagnosis and mismanagement, including surgery that may be unnecessary or may even worsen the underlying condition. The aim of this study was to analyse a series of Chiari I malformation mimics and identify differentiating imaging features. The mimics are categorised as post-traumatic cranio-cervical junction arachnoiditis, dural band, spontaneous intracranial hypotension, idiopathic intracranial hypertension, and cysts. Better understanding of these conditions will assist with diagnosis and optimal management, including avoiding unnecessary surgery.

Original languageEnglish
Article number2786
Pages (from-to)1-13
Number of pages13
JournalJournal of Clinical Medicine
Volume12
Issue number8
DOIs
Publication statusPublished - 9 Apr 2023

Bibliographical note

Copyright the Author(s) 2023. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • arachnoiditis
  • Chiari I malformation
  • cysts
  • dural band
  • idiopathic intracranial hypertension
  • spontaneous intracranial hypotension
  • syringomyelia

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