Jet hematoma
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A jet haematoma or flame haemorrhage is a term used to describe an intraparenchymal haematoma adjacent to a ruptured intracranial berry aneurysm caused when the ruptured aneurysm abuts a lobe of the brain and the pressure of the blood leaving the aneurysm dissects into the brain parenchyma.
Pathology
Location
- inferior frontal lobe - ruptured ACOM, A1, A2 or M1 aneurysm
- anterior temporal lobe - ruptured M1 aneurysm
- medial temporal lobe - rupture PCOM aneurysm
There is a high association with concomitant subdural haemorrhage from the aneurysmal rupture.
Radiographic features
CT
- elongated hyperdense haematoma in the periphery of the affect lobe
- in the frontal lobe often located in the gyrus rectus
- the haematoma often 'points' to the site of the ruptured aneurysm, appearing continuous with the subarachnoid space
- if large enough, the aneurysm may cause a filling defect in the haematoma
- associated subarachnoid haemorrhage
-</ul><h4>Radiographic features</h4><h5>CT</h5><ul>- +</ul><p>There is a high association with concomitant <a title="Subdural haemorrhage" href="/articles/subdural-haemorrhage">subdural haemorrhage</a> from the aneurysmal rupture.</p><h4>Radiographic features</h4><h5>CT</h5><ul>
Images Changes:
Image 3 CT (non-contrast) ( create )
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