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Dissecting vertebral aneurysm. Report of a case
L Fiori1, E P Sganzerla, G Pappadà
1Neurosurgical Clinic, University of Milan, Italy.
Journal of Neurosurgical Sciences
|November 4, 1998
Summary
Dissecting vertebral artery aneurysms are rare but serious, often causing hemorrhage or ischemia. Prompt treatment via VA occlusion is crucial to prevent rebleeding, though potential complications exist.
Area of Science:
- Neurology
- Vascular Surgery
- Radiology
Background:
- Vertebral artery (VA) aneurysms are uncommon, representing <3% of all aneurysms and 20% of posterior fossa aneurysms.
- Three types exist: saccular, fusiform, and dissecting, with dissecting aneurysms posing significant risks.
Observation:
- Diagnosis relies on angiography, surgery, and autopsy, with characteristic "string and pearl" signs on angiography.
- Dissecting VA aneurysms frequently lead to subarachnoid hemorrhage (SAH) or cerebral ischemia.
- High rebleeding risk necessitates prompt treatment, typically involving vertebral artery occlusion.
Findings:
- Both surgical and endovascular techniques are available for treating dissecting vertebral aneurysms.
- Potential ischemic complications can arise from VA occlusion proximal to the PICA origin.
Implications:
- Early diagnosis and intervention are critical for managing dissecting vertebral artery aneurysms.
- Treatment strategies must carefully weigh the risks of rebleeding against potential ischemic complications.
- Further research is needed to optimize diagnostic and therapeutic approaches for these rare vascular lesions.