Good recovery of subarachnoid hemorrhage concomitant with ischemia due to anterior cerebral artery dissection by conservative treatment: A case report

The present report describes the case of a 57-year-old woman presenting with subarachnoid hemorrhage (SAH) and acute ischemic stroke (AIS) due to anterior cerebral artery (ACA) dissection, which exhibited severe stenosis at the origin with distal dilatation of the A2 segment and occlusion of the A3 segment. In this case, computed tomography (CT) revealed SAH in right superior frontal sulcus and the interhemispheric fissure. Magnetic resonance imaging demonstrated acute infarct in the territory of the right ACA. Brain digital subtraction angiography showed severe stenosis at the origin of the A2 segment with distal dilatation and occlusion at the origin of the A3 segment of the right ACA, suggesting a diagnosis of dissection. Only treatment with atorvastatin, her clinical condition subsequently improved. The stenosis and dilatation of A2 segment were ameliorated as demonstrated by a follow-up CT angiography 5 months after onset. SAH concomitant with ischemia caused by ACA dissection is rare. Conservative treatment may be a safe and effective choice for patients with SAH concomitant with AIS due to ACA dissection.