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Arachnoid cyst

Disease definition

Arachnoid cysts are extraparenchymal, intra-arachnoidal collections of fluid, the composition of which is close to that of cerebrospinal fluid. They are often asymptomatic.


  • Synonym(s): -
  • Prevalence: Unknown
  • Inheritance: Autosomal recessive or Not applicable 
  • Age of onset: Childhood
  • ICD-10: G93.0
  • OMIM: 182990  207790
  • UMLS: C0078981
  • MeSH: D016080
  • GARD: 17
  • MedDRA: 10049005
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