Subdural contrast effusion during endovascular therapy: case report.
Accumulation of contrast medium in the subdural space after diagnostic intraarterial contrast administration is a rare observation. The authors report the case of a subdural contrast effusion (SCE) presenting during endovascular treatment of an intracranial dural arteriovenous fistula (DAVF) mimicking an acute subdural hematoma. Differentiation between the two by computed tomography (CT) or intraprocedural Dyna CT and early neurological examination can be crucial for patient management. We believe that repeated large-volume contrast injections via large-bore intermediate catheters into the territory of an (even partly) occluded DAVF may induce leakage of contrast medium into the extravascular subdural space thereby causing a SCE.
['Dahl|Rasmus Holmboe|RH|0000-0002-2014-7400', 'Eskesen|Vagn|V|', 'Benndorf|Goetz|G|']
D020785:Central Nervous System Vascular Malformations D003937:Diagnosis, Differential D057510:Endovascular Procedures D005119:Extravasation of Diagnostic and Therapeutic Materials D005260:Female D006801:Humans D008875:Middle Aged D013353:Subdural Effusion D014057:Tomography, X-Ray Computed
Subdural contrast effusion DAVF Angiography Contrast extravasation