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KMID : 1005420200220040267
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Journal of Cerebrovascular and Endovascular Neurosurgery
2020 Volume.22 No. 4 p.267 ~ p.272
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Foreign body granuloma reaction after endovascular therapy of an unruptured right frontal arteriovenous malformation
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Lopez-Calle Jaime
Colasanti Roberto
Chian Cesar
Choque-Velasquez Joham
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Abstract
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Foreign body reactions after endovascular procedures for brain arteriovenous malformations are extremely rare. We report the case of a cerebral foreign body granuloma reaction after embolization of a frontal arteriovenous malformation with Onyx. A previously treated 36-year-old man underwent re-embolization of a residual and recurrent unruptured right frontal vascular malformation with Onyx. The post-procedural imaging revealed a right frontotemporal heterogeneously enhancing expansive lesion associated with a residual malformation. Following microsurgical resection, the histopathological examination of the expansive lesion revealed basophilic foreign body like deposits adjacent to multi-nucleated giant cells, highly compatible with cerebral foreign body granulomas reaction to Onyx. The clinical and radiological follow-up of the patient was favorable after complete resection of the lesions.
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KEYWORD
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Brain arteriovenous malformation, Embolization, Endovascular therapy, Foreign body granuloma, Onyx
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