The pretzel sign: angiographic pattern of tortuous intra-aneurysmal blood flow in a giant serpentine aneurysm.
AffiliationDepartment of Radiology, Cork University Hospital, Wilton, Cork, Ireland., email@example.com
Carotid Artery, Internal/*radiography
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CitationBr J Neurosurg. 2003 Feb;17(1):67-71.
JournalBritish journal of neurosurgery
AbstractGiant serpentine aneurysms (GSAs) form a specific subgroup of giant cerebral aneurysms that have pathognomonic angiographic features. We report the angiographic findings of a GSA demonstrating a striking convoluted dynamic flow pattern, which we have called the 'pretzel sign'. The aneurysm was successfully treated by permanent occlusion of the parent vessel using a detachable balloon. GSAs should be identified prior to treatment in view of their particular management requirements.