Porencephalic cyst

Case contributed by Dr Mostafa El-Feky

Presentation

Headache.

Patient Data

Age: 50 years
Gender: Female
MRI

An intra-axial well defined cystic lesion at the left temporoparietal region that strictly follows CSF in all basic sequences with free diffusion.

Case Discussion

Features are more suggestive of an intra-axial cyst, mostly porencephalic cyst. features that suggest extra-axial location are:

  • normal appearance of Sylvian fissure and nearby extra-axial space with no extrinsic mass effect upon the brain surface
  • surrounding white matter and lateral ventricle wall around the inner surface of the lesion
  • the outer wall looks continuous with brain surface
  • it is not lined by a grey matter and is associated with a small amount of adjacent FLAIR hyperintensity
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Case information

rID: 42197
Published: 15th Jan 2016
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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