Diseases

Intracranial Aneurysm

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)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

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)

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

43 entry terms
  • Aneurysm, Intracranial
  • Aneurysms, Intracranial
  • Intracranial Aneurysms
  • Aneurysm, Anterior Cerebral Artery
  • Aneurysm, Anterior Communicating Artery
  • Aneurysm, Basilar Artery
  • Aneurysm, Cerebral
  • Aneurysm, Middle Cerebral Artery
  • Aneurysm, Posterior Cerebral Artery
  • Aneurysm, Posterior Communicating Artery
  • Anterior Cerebral Artery Aneurysm
  • Anterior Communicating Artery Aneurysm
  • Basilar Artery Aneurysm
  • Berry Aneurysm
  • Brain Aneurysm
  • Cerebral Aneurysm
  • Giant Intracranial Aneurysm
  • Middle Cerebral Artery Aneurysm
  • Mycotic Aneurysm, Intracranial
  • Posterior Cerebral Artery Aneurysm
  • Posterior Communicating Artery Aneurysm
  • Aneurysm, Berry
  • Aneurysm, Brain
  • Aneurysm, Giant Intracranial
  • Aneurysm, Intracranial Mycotic
  • Aneurysms, Basilar Artery
  • Aneurysms, Berry
  • Aneurysms, Brain
  • Aneurysms, Cerebral
  • Aneurysms, Giant Intracranial
  • Aneurysms, Intracranial Mycotic
  • Artery Aneurysm, Basilar
  • Artery Aneurysms, Basilar
  • Basilar Artery Aneurysms
  • Berry Aneurysms
  • Brain Aneurysms
  • Cerebral Aneurysms
  • Giant Intracranial Aneurysms
  • Intracranial Aneurysm, Giant
  • Intracranial Aneurysms, Giant
  • Intracranial Mycotic Aneurysm
  • Intracranial Mycotic Aneurysms
  • Mycotic Aneurysms, Intracranial

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

History Note

2000(1969)

MeSH Hierarchy

Tree Numbers

  1. C10w.228w.140w.300w.510.600w
  2. C14w.907w.055w.635w
  3. C14w.907w.253w.560.300w

MeSH Record

NLM Classification

WL 355

AMA Style

References

  1. National Library of Medicine. Intracranial Aneurysm. Medical Subject Headings (MeSH). 2026. Unique ID D002532. http://id.nlm.nih.gov/mesh/2026/D002532
  2. Intracranial Aneurysm. In: Wikipedia. https://en.wikipedia.org/wiki/Intracranial_aneurysm
  3. Intracranial Aneurysm. In: Wikidata. https://www.wikidata.org/wiki/Q1198391