E-043 Reversible Cerebral Vasoconstriction Syndrome: Non-invasive Imaging Findings and Angiographic Evaluation

We present indirect findings on non-invasive imaging, such as transient cerebral edema, convexal subarachnoid hemorrhage, intraparenchymal hemorrhage and cerebral. Direct signs of single or multivessel arterial vasoconstriction are seen on CTA, MRA and confirmed on DSA. Reversibility of the vasoconstriction is demonstrated after intra-arterial administration of calcium channel blocker. Conditions such as diffuse atherosclerotic arterial narrowing, vasculitis, posterior reversible encephalopathy, cerebral edema secondary to venous congestion and vasospasm secondary to aneurysmal subarachnoid hemorrhage were among the pathologies considered prior to a definitive diagnosis of RCVS.Summary/conclusionFamiliarity with the imaging findings of RCVS is of critical importance to direct appropriate and timely clinical management. Atypical subarachnoid hemorrhage, unexplained cerebral edema and hemorrhage, as well as single or multivessel diffuse narrowing with a relatively normal appearing brain should raise suspicion of RCVS. Suspicion can be confirmed by demonstrating the reversibility of vasoconstrictions after intra-arterial administration of calcium channel blocker or at follow-up imaging.Abstract E-043 Figure 148-year old female presenting with severe headache and evidence of subarachnoid hemorrhage on head CT (not shown). No aneurysm or other causes for intracranial bleed was demonstrated on DSA. (A) Multiple segmentel areas of vasoconstrictions of the MCA and ACA branches are de...

Source: Journal of NeuroInterventional Surgery - July 28, 2016 Category: Neurosurgery Authors: de Macedo Rodrigues, K., Hito, R., Takhtani, D., Lozano, J., Wakhloo, A., Puri, A. Tags: Electronic poster abstracts Source Type: research