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Extravasating Contrast Material on Angiography Following Carotid Angioplasty and Stenting: Not Necessarily Subarachnoid Hemorrhage |
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| Authors: | Pranshu Sharma MD Alexandre Y. Poppe MD FRCPC Muneer Eesa MD Nikolai Steffanhagan MD Mark Hudon MD FRCPC William Morrish MD FRCPC |
| Affiliation: | 1. From the Department of Diagnostic Imaging, Foothills Medical Centre, Calgary, Alberta, Canada (PS, ME, MH, WM);2. Calgary Stroke Program, Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada (AYP, NS). |
| Abstract: | 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. |
| Keywords: | Carotid angioplasty and stenting extravasation sub‐arachnoid hemorrhage |