Congenital vermian hypolplasia (Joubert's syndrome)

Case contributed by Dr Mohammad A. ElBeialy


Abnormal eye movement.

Patient Data

Age: 8 Months
Gender: Male
  • mild  cerebellar vermian hypoplasia with abnormal folia pattern, abnormally dilated 4th ventricle having umbrella or bat-wing configuration and molar tooth configuration of the midbrain. 
  • slight dilatation of the supratentorial ventricular system. 
  • no mass lesion. 
  • normal cortical sulci, no extra-axial collection.


Congenital vermian hypoplasia (Joubert’s syndrome).

Case Discussion

The cerebellar vermian hypolplasia as well as molar tooth brainstem and Bat-wing or  umbrella- shaped 4th ventricle together with cleft vermis are diagnostic of Joubert syndrome.  

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Case information

rID: 23415
Published: 13th Jun 2013
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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