Abstract
We report the case of a patient with an anterior cerebral artery dissecting aneurysm associated with fibromuscular dysplasia (FMD). A 50-year-old woman was admitted to our hospital because she complained of sudden pain in the occipital region with muscle weakness on the left side while driving a car. Brain computed tomography and magnetic resonance imaging showed a fresh cerebral infarction and subarachnoid hemorrhage in the right frontal lobe. Cerebral angiography revealed string of beads lesions in both of the internal carotid arteries as well as an accumulation of contrast media in the right anterior cerebral artery. These data suggested that the patient developed the cerebral infarction and subarachnoid hemorrhage due to dissection of the right anterior cerebral artery associated with FMD. Her symptoms gradually disappeared after bed rest and antihypertensive drugs, with no remaining neurological symptoms. FMD should be considered in the differential diagnosis of patients with cerebral artery dissection, especially those with anterior cerebral artery dissection.
