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Surgical strategies for giant intracranial aneurysms
1Department of Neurological Surgery, University of California, San Francisco, USA.
Insights
Giant intracranial aneurysms require aggressive surgical treatment due to poor prognosis. Surgical strategies focus on direct clipping or alternative techniques, prioritizing parent artery preservation and cerebral blood flow restoration.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Interventional Neuroradiology
Background:
- Giant intracranial aneurysms present a high risk of hemorrhage, compression, and thromboembolism.
- The natural history of untreated giant aneurysms is poor, necessitating aggressive management strategies.
Purpose of the Study:
- To outline surgical approaches for managing giant intracranial aneurysms.
- To emphasize the importance of individualized treatment strategies and multidisciplinary care.
Main Methods:
- Surgical exposure tailored to aneurysm location.
- Vascular control for intraoperative management and improved visualization.
- Direct clipping as the preferred occlusion method.
- Alternative techniques for unclippable aneurysms, including trapping and parent artery occlusion.
- Consideration of hypothermic circulatory arrest for complex posterior circulation aneurysms.
Main Results:
- Direct clipping allows for meticulous preservation of parent and branch arteries.
- Alternative techniques may compromise parent arteries, necessitating revascularization.
- Successful surgical management requires comprehensive planning and specialized expertise.
Conclusions:
- Giant intracranial aneurysms are complex lesions demanding tailored surgical planning.
- A multidisciplinary approach in specialized centers is crucial for optimal patient outcomes.
- Aggressive surgical intervention is warranted to mitigate the risks associated with giant intracranial aneurysms.
Abstract:
Untreated giant intracranial aneurysms have a dismal natural history as a result of hemorrhage, cerebral compression, and thromboembolism. The poor prognosis of patients with giant aneurysms therefore warrants aggressive treatment. A surgical approach is chosen to maximize the operative exposure of the aneurysm and depends mainly on the aneurysm's location. Once exposed, vascular control of the aneurysm is required not only to manage an intraoperative rupture, but also to collapse the aneurysm, to increase working space, and to improve visualization of the anatomy. Hypothermic circulatory arrest may be indicated in select patients with complex posterior circulation aneurysms. Direct clipping of giant aneurysms, with meticulous preservation of parent and branch arteries, is the preferred method of occlusion. Unclippable aneurysms require alternative techniques (e.g., trapping, parent artery occlusion, excision, and aneurysmorrhaphy) that compromise parent arteries and may require revascularization to restore adequate cerebral blood flow. Giant aneurysms are complex lesions that demand thorough surgical planning, individualized strategies, and a multidisciplinary effort in specialized neurovascular centers.