New-onset psychosis associated with dandy-walker variant in an adolescent female patient

J Neuropsychiatry Clin Neurosci. 2012 Spring;24(2):241-6. doi: 10.1176/appi.neuropsych.11090207.


The relationship between psychotic disorders, in particular, schizophrenia, and neurodevelopmental abnormalities has been conceptualized in the latest literature. Dandy-Walker variant, defined by cystic dilatation of the fourth ventricle and hypoplasia of the inferior portion of the vermis without enlargement of the posterior fossa, is a distinctive entity believed to represent a mild subtype of Dandy-Walker complex. The authors hypothesize a correlation between new onset of psychosis and cerebellar abnormalities in an adolescent patient.

Publication types

  • Case Reports

MeSH terms

  • Adolescent
  • Dandy-Walker Syndrome / complications
  • Dandy-Walker Syndrome / psychology*
  • Female
  • Humans
  • Magnetic Resonance Imaging / methods
  • Magnetic Resonance Imaging / psychology
  • Neuroimaging / methods
  • Neuroimaging / psychology*
  • Psychological Tests / statistics & numerical data
  • Psychotic Disorders / complications
  • Psychotic Disorders / psychology*

Supplementary concepts

  • Dandy Walker variant