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Sylvian subarachnoid and extra-pial cavernous angioma
1Department of Neurological Sciences, Neurosurgery, University La Sapienza, Rome, Italy. Jacopole@yahoo.it
Journal of Neurosurgical Sciences
|December 24, 2005
Summary
This study reports a rare case of a supratentorial subarachnoid cavernous angioma, a type of brain vascular malformation. This finding helps explain some cases of subarachnoid hemorrhage of unknown origin.
Area of Science:
- Neurology
- Neurosurgery
- Vascular Malformations
Background:
- Cavernous angiomas are a type of vascular malformation in the central nervous system.
- Subarachnoid cavernous angiomas are rare, with most reported cases occurring in the infratentorial region.
Observation:
- A 35-year-old patient presented with symptoms of subarachnoid hemorrhage.
- CT scan revealed a 1 cm hyperdense lesion in the right Sylvian fissure, with no arterial supply shown on cerebral angiography.
Findings:
- Surgical exploration identified an extra-pial lesion within the subarachnoid space in the Sylvian cistern.
- This case represents a radiologically visible, supratentorial, extra-pial, subarachnoidal cavernous angioma.
Implications:
- This case confirms a potential cause for subarachnoid hemorrhage of unknown origin (hemorrhage 'sine materia').
- Highlights the importance of considering rare vascular malformations in the differential diagnosis of subarachnoid hemorrhage.