抄録
A 54-year-old female presented with non-traumatic anterior cerebral artery (ACA) dissection, manifesting as sudden onset of headache and nausea. Computed tomography (CT) and angiography revealed subarachnoid hemorrhage (SAH) due to a dissecting aneurysm at the left A1 segment accompanied with an azygos ACA. Right fronto-temporal craniotomy was performed for trapping the aneurysm, and the patient made a good recovery. A combination of A1 dissection and azygos ACA is very rare, and trapping is the most effective method for prevention of re-rupture.
