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  • Title: A Recurrent Case of Ischemic Stroke Caused by Vasospasm due to Giant Cell Arteritis.
    Author: Kawamura R, Mizuma A, Kouchi M, Nagata E, Takahashi W, Takizawa S.
    Journal: J Stroke Cerebrovasc Dis; 2017 Nov; 26(11):e216-e217. PubMed ID: 28843802.
    Abstract:
    A 73-year-old man was admitted with sudden right upper-limb weakness. He had a temporal headache on the left side and had a 4-month history of fever. Meandering of the left temporal artery (TA) with induration and high inflammatory responses (white blood cell count 22,500 per microliter, C-reactive protein 35.0 mg/dL, and elevated sedimentation rate [ESR] 80 mm/h) were observed. Glycometabolism and lipid metabolism were normal, and autoimmune antibodies were negative. Cultivation tests revealed no bacteria in either blood culture or cerebrospinal fluid. Brain magnetic resonance imaging (MRI) showed ischemic lesion in the left frontal lobe, while magnetic resonance angiography (MRA) and carotid ultrasonography showed unstable plaque lesions in the left extracranial internal carotid artery (ICA). According to reported criteria (age > 50 years, new onset of headache, abnormality of the TA, and raised ESR), we diagnosed giant cell arteritis (GCA) with acute ischemic stroke (IS) and gave the patient antithrombotic therapy (aspirin 100 mg, cilostazol 200 mg). After admission, hemiparesis progressed but fluctuated. Subsequent MRI showed new lesions in the left watershed area. MRA also showed vasospasm in the middle cerebral artery and C5 portion of the ICA. Considering the correlation with GCA pathophysiology, oral prednisolone therapy was administered. Steroid therapy has prevented stroke recurrence and improved the symptoms and vasospasm. We wish to emphasize that GCA can induce IS via vasospasm, and steroid therapy is recommended.
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