Presentation
Sudden onset headache.
Patient Data
Right frontal lobe hematoma with extension in the sub-dural space. Note the discrete region of low density within the anterior portion of the bleed.
CTA COW demonstrates a large opacifying venous varix.
Limited DSA views.
Ethmoidal dural AVF, with feeder coming off: Bilateral ophthalmic arteries - via right side crista galli. Bilateral external carotid arteries most likely from the ethmoidal and nasal cavity branches coming off of the internal maxillary arteries-R>L. Venous varicosity noted, with a large varix measuring approximately 12 mm x 8 mm to right of midline. Venous drainage noted into the rostral part of the superior sagital sinus. No further abnormality is identified.
Conclusions: Ethmoidal dural AVF with bilateral ophthalmic and external carotid feeders, as described.
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