Subdural contrast effusion during endovascular therapy: case report
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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.
KeywordsSubdural contrast effusion Contrast extravasation DAVF Angiography
dural arteriovenous fistula
digital subtraction angiography
subdural contrast effusion
Conception and design: Dahl and Benndorf. Acquisition of data: Dahl and Benndorf. Analysis and interpretation of data: Dahl and Benndorf. Drafting the article: all authors. Critically revising the article: all authors. Reviewed submitted version of manuscript: all authors. Approved the final version of the manuscript on behalf of all authors: Benndorf. Administrative/technical/material support: Dahl and Benndorf. Study supervision: Benndorf.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
The patient has consented to the submission of the case report to the journal.
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