Presentation
Subarachnoid hemorrhage
Patient Data
Age: Adult
From the case:
Moyamoya phenomenon
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First and second images show internal carotid artery stenosis.
Third image shows vertebral artery origin stenosis.
Fourth image shows collaterals of Moyamoya phenomenon.
Last image shows collateral from posterior circulation.
From the case:
Moyamoya phenomenon
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Right internal carotid angiography shows Moyamoya phenomenon.
Case Discussion
Angiography was performed in a patient with right Sylvian fissure SAH with suspicion of MCA aneurysm.
DSA revealed severe stenosis of Intracranial ICA with Moyamoya pattern of collateral vessels.
There is a tight stenosis at the left vertebral origin.
Final diagnosis: Moyamoya phenomenon.