Extravasating contrast material on angiography following carotid angioplasty and stenting: not necessarily subarachnoid hemorrhage.
We describe a case of asymptomatic extravasation of iodinated contrast material into the sulci on digital subtraction angiography following carotid angioplasty and stenting resulting in sulcal hyperdensity on computed tomography (CT). We believe the mechanism for this observation is hyperperfusion injury and that in the absence of any associated clinical signs, it should not be considered alarming for subarachnoid hemorrhage.
Sharma
Pranshu
P
Department of Diagnostic Imaging, Foothills Medical Centre, Calgary, Alberta, Canada. pranshu.sharma@calgaryhealthregion.ca
Poppe
Alexandre Y
AY
Eesa
Muneer
M
Steffanhagan
Nikolai
N
Hudon
Mark
M
Morrish
William
W
D017130:Angioplasty / Q000009:adverse effects*; D016893:Carotid Stenosis / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D002533:Cerebral Angiography / Q000009:adverse effects*; D003287:Contrast Media / Q000009:adverse effects; D005119:Extravasation of Diagnostic and Therapeutic Materials / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D007455:Iodine / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology; D016896:Treatment Outcome
D003287:Contrast Media; D007455:Iodine