Perimesencephalic subarachnoid hemorrhage

Case contributed by A.Prof Frank Gaillard


Sudden onset of headache. No loss of consciousness or neurological deficit.

Patient Data

Age: 45 years
Gender: Male

CT brain

Blood is seen in the perimesencephalic cistern. 

Case Discussion

This is the typical distribution of perimesencephalic subarachnoid hemorrhage, which usually is non-aneurysmal in origin. 

This patient went on to have a CTA which demonstrated no evidence of an aneurysm. They were further evaluated with DSA and followup and he has remained well. 

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Case information

rID: 21466
Published: 24th Jan 2013
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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