Abstract
Background: Intracranial arterial dissection is relatively rare and generally considered to have worse outcome than extracranial arterial dissection. It is however a clinically significant entity which causes severely disabling ischaemic stroke or subarachnoid haemorrhage. Only a few large case series have been reported, but there is increased recognition with advance in non-invasive angiographic diagnostic procedures. Patients with posterior circulation dissection appear to present more commonly with subarachnoid hemorrhage and are said to have a worse outcome. The choices of treatment including medical therapy, and endovascular and surgical intervention, remain controversial.
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