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Cerebral Amyloid Angiopathy-related Inflammation Demonstrating Early Venous Filling on Digital Subtraction Angiography:A Case Report Daisuke YAMAMOTO 1 , Daisuke ISHIMA 2 , Madoka INUKAI 3 , Jun NIKI 1 , Ryo USUI 2 , Hiroyuki KOIZUMI 1 , Makoto SAEGUSA 3 , Kazutoshi NISHIYAMA 2 , Toshihiro KUMABE 1 1Department of Neurosurgery, Kitasato University School of Medicine 2Department of Neurology, Kitasato University School of Medicine 3Department of Pathology, Kitasato University School of Medicine Keyword: Cerebral amyloid angiopathy-related inflammation , early venous filling , digital subtraction angiography pp.641-647
Published Date 2020/7/10
DOI https://doi.org/10.11477/mf.1436204244
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 Cerebral amyloid angiopathy-related inflammation(CAA-RI)is a rare condition thought to be caused by an inflammatory response to amyloid beta(Aβ)protein in the walls of the small arteries and capillaries of the cerebral cortex.

 A 73-year-old female presented with left hemiparesis and dysarthria. Fluid-attenuated inversion recovery(FLAIR)imaging disclosed progressive enlargement of infiltrative white matter abnormalities in the right temporo-occipito-parietal lobes. Interestingly, digital subtraction angiography(DSA)demonstrated early venous filling. Pathological examination of the biopsy specimen demonstrated lymphocytes infiltration surrounding the blood vessels and in the thickened walls with amyloid-beta deposition. The diagnosis given was CAA-RI. The patient was successfully treated with high dose corticosteroids and clinical improvement was associated with shrinkage of the high intensity lesion on FLAIR imaging. Early venous filling resolved on the follow-up DSA.

 Most patients with CAA-RI can be treated with corticosteroids. However, the clinical condition will worsen without appropriate treatment. Early diagnosis is the key. If an expanding disease of the white matter appears in an elderly patient, we should exclude other cerebrovascular diseases by DSA, followed by biopsy without delay. The present case demonstrated that early venous filling on DSA may appear until inflammation is resolved by the treatment of CAA-RI.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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