Intracranial aneurysms are classified as giant when their largest diameter is equal to or greater than 25 mm. They represent approximately 5–7% of all intracranial aneurysms. The aneurysms have an extremely poor natural history with 68% mortality over two years and a staggering 85% mortality over five years for untreated cases.
The clinical presentation, natural history, location, therapeutic
... [Show full abstract] challenges, and treatment strategy are considerably different from other smaller intracranial aneurysms and this warrants special attention for this formidable subgroup.
This chapter will summarize the types of giant intracranial aneurysms and their pathophysiology, will review the clinical presentation and diagnostic evaluation and discuss different management strategies.