Delayed leucoencephalopathy after coil embolisation of unruptured cerebral aneurysm

Yoshihisa Fukushima, Ichiro Nakahara

研究成果: Article

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A 56-year-old right-handed woman was successfully treated by coil embolisation for a large unruptured paraclinoid aneurysm of the left internal carotid artery. Though she was discharged on day 3 after the intervention with uneventful clinical course, she was rehospitalised for continuous headache and right upper limb weakness 2 weeks after the treatment. Subsequent progression of cognitive dysfunction and right hemiparesis were observed. Repeated MRI revealed diffuse leucoencephalopathy within the ipsilateral brain hemisphere. Clinical course, serological examination, and radiological findings were consistent with localised hypocomplemental vasculitis caused by delayed hypersensitivity reaction. Immunosuppressive treatments using prednisolone successfully improved her symptoms. After a washout period for immunosuppressant, skin reaction test was performed and revealed polyglycolic-polylactic acid, coating material of the coil, positive for delayed allergic reaction. Given the increased frequency of endovascular treatment for unruptured aneurysms, even such a rare complication should be recognised and treated properly to avoid neurological sequelae.

元の言語English
記事番号bcr-2018-224569
ジャーナルBMJ Case Reports
2018
DOI
出版物ステータスPublished - 2018

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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