BACKGROUND AND PURPOSE: Posterior @entity5487 (PICA) dissecting @entity439 require rapid and aggressive treatment by sacrificing the parent vessel of the @entity439 -bearing dissected vessel. We assessed the clinical consequences of PICA occlusion in view of the local vascular anatomy. MATERIALS AND METHODS: We performed a retrospective search of our neurovascular database in the period 2007-2012. @entity1 characteristics, including clinical presentation, WFNS (World Federation of Neurosurgical Societies) grading and Glasgow Outcome Scale (GOS), were recorded. CT and CT angiographic findings as well as the detailed vascular anatomy including collateral circulation were assessed. RESULTS: We identified 10 @entity1 (5 male; mean age 50 years). Eight @entity1 presented with WFNS grade I and II, one with grade IV and one with grade V. All @entity1 were treated with parent @entity432 (PVO). An extradural PICA origin was seen in three @entity1 . Collateral circulation was visible before @entity30990 in two and after PVO in seven additional @entity1 . Despite the presence of collaterals, mild @entity63 occurred in three @entity1 , without development of a @entity5487 . Outcome was favorable in 9 @entity1 (8 @entity1 GOS 5, one @entity1 GOS 4). One @entity1 died due to the mass effect of the @entity76 . CONCLUSION: PVO to treat PICA dissecting @entity439 was well tolerated with a 90% favorable outcome. Regional collateral circulation and vascular variations permitted relative safe @entity432 with only @entity76 in this small group of @entity1 .

Treatment of dissecting XXXX of the PICA: Anatomical considerations and clinical outcome.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'Patient'] @entity30990 :: ('CHEBI:53703', 'Chemical') :: ['PVO'] @entity63 :: ('MESH:D007511', 'Disease') :: ['cerebellar ischemia'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'aneurysm'] @entity5487 :: ('MESH:D014854', 'Disease') :: ['Wallenberg syndrome', 'inferior cerebellar artery'] @entity76 :: ('MESH:D002526', 'Disease') :: ['initial cerebellar hematoma', 'minor cerebellar symptoms'] @entity432 :: ('MESH:D001157', 'Disease') :: ['vessel occlusion']
@entity439 :: (MESH:D000783,Disease) :: ['aneurysms']
