RT Journal Article SR Electronic T1 Simultaneous Subarachnoid Hemorrhage and Carotid Cavernous Fistula after Rupture of a Paraclinoid Aneurysm during Balloon-Assisted Coil Embolization JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1100 OP 1102 VO 20 IS 6 A1 Phatouros, Constantine C. A1 Halbach, Van V. A1 Malek, Adel M. A1 Dowd, Christopher F. A1 Higashida, Randall T. YR 1999 UL http://www.ajnr.org/content/20/6/1100.abstract AB Summary: We describe an iatrogenic perforation of a paraclinoid aneurysm during balloon-assisted coil embolization that resulted in simultaneous subarachnoid contrast extravasation and a carotid cavernous fistula. The causative factors specifically related to the balloon-assisted method that led to aneurysm rupture are discussed as well as strategies for dealing with this complication.