Arachnoid cyst - cerebellopontine angle

Case contributed by Dr Chris O'Donnell

Presentation

Right sided vertigo ?vestibular Schwannoma

Patient Data

Age: 45 years
Gender: Male
MRI

Routine IAM study

CSF intensity cystic lesion in the right cerebellopontine angle. It follows CSF signal in all the sequences. The lesion does not show restricted diffusion, excluding an epidermoid cyst. Cerebellar hemispheric compression (sagittal series) and distortion of the brain stem with anterior displacement and stretching of the VII/VIIIth and XIIth nerves.

Case Discussion

Typical features of arachnoid cyst. 

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Case information

rID: 16521
Published: 24th Jan 2012
Last edited: 13th Aug 2019
Inclusion in quiz mode: Included

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