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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 20:1329-1332 (8 1999)
© 1999 American Society of Neuroradiology

ARTICLE

Intraventricular Contrast Medium Leakage during Ethanol Embolization of an Arteriovenous Malformation

Constantine C. Phatouros^,a, Van V. Halbach^a, Adel M. Malek^a, Philip M. Meyers^a, Christopher F. Dowd^a and Randall T. Higashida^a

^a From the Departments of Radiology, Division of Interventional Neurovascular Radiology (C.C.P., V.V.H., A.M.M., P.M.M., C.F.D., R.T.H.), and Neurological Surgery (C.C.P., V.V.H., C.F.D., R.T.H.), University of California, San Francisco Medical Center, San Francisco, CA.

Summary: We report the unusual phenomenon of abrupt intraventricular contrast medium leakage from the choroid plexus occurring during ethanol embolization of a periventricular arteriovenous malformation. There was no evidence of any associated intraventricular hemorrhage to suggest that leakage arose from a vessel perforation, as was first suspected. Intraventricular contrast medium leakage has been reported previously in the setting of ependymitis, and it is likely that similar pathogenetic mechanisms apply in this case. To our knowledge, this is the first reported case of intraventricular contrast medium leakage occurring during an embolization procedure.