American Journal of Neuroradiology 23:408-411, March 2002
© 2002 American Society of Neuroradiology
Case Report
BRAIN
Diagnostic Pitfall: Atypical Cerebral Venous Drainage via the Vertebral Venous System
a From the Departments of Neurology (O.H., J.S.B., J.K., J.M.V.) and Neuroradiology (R.K.), University Hospital Charité, Humboldt University, Berlin, Germany
Address reprint requests to Dr Olaf Hoffmann, Neurologische Klinik und Poliklinik, Universitätsklinikum Charité, Schumannstr 2021, 10117 Berlin, Germany
Summary: We report a case of atypical cerebral venous drainage in a 38-year-old woman with symptoms of benign paroxysmal positional vertigo. Thrombosis of the left internal jugular vein and sigmoid sinus was suspected on the basis of spin-echo and time-of-flight MR findings, but multisection CT angiograms showed a patent sigmoid sinus and predominant drainage via the emissary veins toward the vertebral plexus, with only a minor contribution of the jugular veins. This case illustrates the variability of the venous anatomy in the craniocervical region.