頸部血管超音波検査が有用であった非外傷性頭蓋外内頸動脈解離による若年脳梗塞の1例 [in Japanese] A Case of Stroke in a Young Patient due to Nontraumatic Extracranial Internal Carotid Artery Dissection Detected by Carotid Ultrasonography [in Japanese]
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A 34-year-old woman was admitted to our hospital because of sudden left hemiparesis and amaurosis fugax in the right eye. She had no headache, neck pain or trauma. Diffusion-weighted MRI demonstrated acute cerebral infarctions in the right middle cerebral artery territory, and in the border zone between the territories of the right anterior and middle cerebral arteries. T1-weighted MRI demonstrated an intramural hematoma in the right internal carotid artery. Carotid ultrasonography performed on the 4th hospital day showed severe stenosis (ECST 77%, area 89%) in the right internal carotid artery. Cerebral angiography performed on the 20th hospital day revealed an irregular, long-distance stenosis (string sign) in the cervical portion of the right internal carotid artery. Follow-up ultrasound examination showed recanalization of the right internal carotid artery. Therefore, the patient was diagnosed as having internal carotid artery dissection. We emphasize the usefulness of a noninvasive technique such as cervical ultrasound examination with color-coded Doppler for the diagnosis and follow-up of nontraumatic extracranial internal carotid artery dissection.
Neurosonalogy 18(2), 82-85, 2005-12-30
The Japan Academy of Neurosonology