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  • Title: [Diagnostic imaging of central nervous system vasculitis].
    Author: Yokota H, Yamada K.
    Journal: Brain Nerve; 2015 Mar; 67(3):249-60. PubMed ID: 25846439.
    Abstract:
    Vasculitis involving the central nervous system presents with infarction and hemorrhage, which are often nonspecific findings. Laboratory examinations are essential for diagnosis of vasculitis in addition to comprehensive and systematic review of the clinical course. Although most findings tend to be nonspecific, enhancement and thickening of the vascular wall indicate vasculitis. Visualization of the vascular wall requires selection of the appropriate imaging modality and mode of image acquisition. Contrast-enhanced CT, MRI, and FDG-PET are useful for visualizing large vessel vasculitis, while CT, MRI, and angiography are effective for medium vessel vasculitis. The use of ultrasound is limited to evaluating vessels on the body surface. Although relatively thick vessels can be demonstrated by angiography, complete survey of small vessels is difficult. Here, we summarize the characteristics of each imaging modality and imaging findings of typical vasculitides-Takayasu arteritis, giant cell arteritis, ANCA-associated vasculitis, Behçet's disease, primary angiitis of the CNS, and vasculitis associated with systemic disease. Differential diagnoses are also shown, including infective endocarditis, tuberculous meningitis, Ehlers-Danlos syndrome, and reversible cerebral vasoconstriction syndrome.
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