Anterior comminucating artery fenestration complex with saccular aneurysm
Patient with subarachnoid hemorrhage. No past medical history.
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CTA demonstrates anterior cerebral artery (ACA)-anterior communicating artery (Acom) fenestration complex with a saccular aneurysm. The A1 segment of the left anterior cerebral artery (ACA) is hypoplastic.
Fenestrations occur more often in the anterior circulation and the most common location is the anterior communicating artery (Acom). The association of saccular aneurysms with fenestration are very uncommon.