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)

Also Known As:

Cerebral Aneurysm; Berry Aneurysm; Brain Aneurysm; Cerebral Aneurysms; Intracranial Aneurysms; Aneurysm, Intracranial; Aneurysm, Brain; Aneurysm, Cerebral; Aneurysm, Anterior Cerebral Artery; Aneurysm, Anterior Communicating Artery; Aneurysm, Basilar Artery; Aneurysm, Middle Cerebral Artery; Aneurysm, Posterior Cerebral Artery; Aneurysm, Posterior Communicating Artery; Anterior Cerebral Artery Aneurysm; Anterior Communicating Artery Aneurysm; Middle Cerebral Artery Aneurysm; Posterior Cerebral Artery Aneurysm; Posterior Communicating Artery Aneurysm; Aneurysm, Berry; Aneurysm, Giant Intracranial; Aneurysm, Intracranial Mycotic; Aneurysms, Basilar Artery; Aneurysms, Berry; Aneurysms, Brain; Aneurysms, Cerebral; Aneurysms, Giant Intracranial; Aneurysms, Intracranial; Aneurysms, Intracranial Mycotic; Artery Aneurysm, Basilar; Artery Aneurysms, Basilar; Basilar Artery Aneurysms; Berry Aneurysms; Brain Aneurysms; Giant Intracranial Aneurysms; Intracranial Aneurysm, Giant; Intracranial Aneurysms, Giant; Intracranial Mycotic Aneurysm; Intracranial Mycotic Aneurysms; Mycotic Aneurysms, Intracranial; Basilar Artery Aneurysm; Giant Intracranial Aneurysm; Mycotic Aneurysm, Intracranial

Nervous System Diseases: 14178
- Central Nervous System Diseases: 4213
  - Brain Diseases: 15694
    - Cerebrovascular Disorders: 7559
      - Intracranial Arterial Diseases: 8
        Intracranial Aneurysm: 5426
Cardiovascular Diseases: 91362
- Vascular Diseases: 15138
  - Aneurysm: 24506
    - Intracranial Aneurysm: 5426
  - Cerebrovascular Disorders: 7559
    - Intracranial Arterial Diseases: 8
      - Intracranial Aneurysm: 5426

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