Duplexsonographie bei Karotis-Sinus-cavernosus-Fistel

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Abstract
The absence of valves in the ophthalmic veins leads to a reversal of flow and marked vascular dilatation if there is a carotid-cavernous sinus fistula. Based on a case report, the possibility of accurate duplex sonographic evaluation of these findings is shown. Duplex sonography should be employed as a simple, non-invasive and inexpensive diagnostic method even if the likelihood of a carotid-cavernosus sinus fistula is remote.

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