Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841)

Descriptor ID	D002532
MeSH Number(s)	C10.228.140.300.510.600 C14.907.055.635 C14.907.253.560.300
Concept/Terms	Intracranial Aneurysm Intracranial Aneurysm Aneurysms, Intracranial Intracranial Aneurysms Aneurysm, Intracranial Aneurysm, Anterior Communicating Artery Aneurysm, Anterior Communicating Artery Anterior Communicating Artery Aneurysm Aneurysm, Basilar Artery Aneurysm, Basilar Artery Aneurysms, Basilar Artery Artery Aneurysm, Basilar Artery Aneurysms, Basilar Basilar Artery Aneurysms Basilar Artery Aneurysm Aneurysm, Middle Cerebral Artery Aneurysm, Middle Cerebral Artery Middle Cerebral Artery Aneurysm Aneurysm, Posterior Cerebral Artery Aneurysm, Posterior Cerebral Artery Posterior Cerebral Artery Aneurysm Berry Aneurysm Berry Aneurysm Aneurysm, Berry Aneurysms, Berry Berry Aneurysms Brain Aneurysm Brain Aneurysm Aneurysm, Brain Aneurysms, Brain Brain Aneurysms Cerebral Aneurysm Cerebral Aneurysm Aneurysms, Cerebral Cerebral Aneurysms Aneurysm, Cerebral Giant Intracranial Aneurysm Giant Intracranial Aneurysm Aneurysm, Giant Intracranial Aneurysms, Giant Intracranial Giant Intracranial Aneurysms Intracranial Aneurysm, Giant Intracranial Aneurysms, Giant Mycotic Aneurysm, Intracranial Mycotic Aneurysm, Intracranial Aneurysm, Intracranial Mycotic Aneurysms, Intracranial Mycotic Intracranial Mycotic Aneurysm Intracranial Mycotic Aneurysms Mycotic Aneurysms, Intracranial Aneurysm, Anterior Cerebral Artery Aneurysm, Anterior Cerebral Artery Anterior Cerebral Artery Aneurysm Aneurysm, Posterior Communicating Artery Aneurysm, Posterior Communicating Artery Posterior Communicating Artery Aneurysm

Below are MeSH descriptors whose meaning is more general than "Intracranial Aneurysm".

Below are MeSH descriptors whose meaning is related to "Intracranial Aneurysm".

Below are MeSH descriptors whose meaning is more specific than "Intracranial Aneurysm".