Intracranial and extracranial arterial dissection presenting with XXXX : Lesion location and @entity64 mechanism.

@entity1 @entity64 @entity63 @entity130 @entity73 @entity887 @entity1129 @entity732 @entity715 @entity4066 @entity385
UNASSIGNED: Background and purpose Although @entity4066 ( @entity4066 ) are common causes of @entity385 in young individuals, anatomical locations and mechanisms of @entity385 are still unclear. We evaluate the prevalence, location, and pathogenic mechanisms of @entity385 caused by @entity4066 . METHODS: We reviewed CAD @entity1 who presented with acute (<7days) @entity63 events and who had undergone diffusion weighted magnetic resonance imaging (MRI) and appropriate vascular imagings (MR angiography, computed tomography angiography, digital subtraction angiography, and high-resolution MRI). @entity64 mechanisms were categorized as artery-to-artery (AA) @entity887 , @entity732 , in situ @entity715 and @entity73 . RESULTS: One hundred and thirty-five @entity1 with @entity385 (n=125) or transient @entity63 attacks (n=10) were included. The locations of 159 dissected vessels were: 77 vertebral, 29 internal carotid, 24 middle cerebral, 12 basilar, eight posterior inferior cerebellar, five anterior cerebral, and four posterior cerebral arteries. Among @entity64 mechanisms, @entity1129 (n=70, 55.5%) was the most common followed by @entity732 (n=40, 31.7%) and in situ @entity715 (n=8, 6.3%). Intracranial @entity4066 were more common (89 vs. 44), less often associated with @entity130 (21.3% vs. 40.9%, p=0.018) and @entity1129 (32.9% vs. 97.6%, p<0.001), and more often treated with intravenous thrombolysis (15.7% vs. 2.3%. p=0.021) than extracranial @entity4066 . CONCLUSIONS: In our cohort, intracranial @entity4066 are more common than extracranial @entity4066 , and the vertebral artery is the most frequently involved site. Although @entity1129 is the main @entity64 mechanism, @entity732 is another important @entity64 mechanism.
