Cerebral aneurysm

뇌동맥류(cerebral aneurysm, Intracranial aneurysm)은 뇌출혈의 주요 위험 인자임.

Common site

• 대부분 circle of Willis.
  • ACA or ACoM(35%)
  • internal carotid artery(supraclinoid ICA and ICA/PCoA junction)
  • MCA (M1/M2 junction) bi/trifurcation: 20-30%
  • posterior circulation(basilar artery apex, SCA, PICA)
• 기타: superior hypophyseal artery(SHPA)

분류

• Unruptured intracranial aneurysm(UIA)
• Ruptured intracranial aneurysm

크기

• Giant intracranial aneurysm: >25 mm in greatest dimension

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