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Common carotid injections only obtained, as well as left vertebral artery injection from the left subclavian. No vascular anomaly was shown to correlate with findings on MRI. In particular, there is no early venous filling or other evidence of a dural arteriovenous fistula in the region of the left sigmoid/transverse sinus or elsewhere. Of note, the abnormality is also not shown on CT angiography (not shown).