Foreign body granuloma reaction after endovascular therapy of an unruptured right frontal arteriovenous malformation

Lopez-Calle J.; Colasanti R.; Chian C.; Choque-Velasquez J. · Journal of Cerebrovascular and Endovascular Neurosurgery (2020) · DOI: 10.7461/jcen.2020.e2019.09.006

Resumen

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-proce-dural 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.

Instituciones: Universidad Peruana Cayetano Heredia