Intracranial aneurysm (overview)

Last revised by Dr Calum Worsley on 28 Apr 2022

Intracranial aneurysms, also called cerebral aneurysms, are aneurysms of the intracranial arteries. The most common morphologic type is the saccular aneurysm.

Pathology

There is not a universal classification for the types of intracranial aneurysms, resulting in a heterogeneous mix of terms based on the morphology, size, location, and etiology 1,2:

Classification

Varying risk stratification models are utilized. These commonly include risk factors such as age, ethnicity, presence of subarachnoid hemorrhage, size and location of aneurysm. 

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