Abstract
Preoperative particle embolization of intracranial meningiomas is frequently used to reduce intraoperative blood loss and to facilitate surgery. In selected cases palliative embolization without subsequent surgery has been proposed as alternative treatment to cause subsequent tumor shrinkage. The authors report on an 81-year-old female patient presenting with a large frontotemporal convexity meningioma. Clinical symptoms included hemihypesthesia and seizures. Embolization of the middle meningeal artery blood supply was performed without technical problems, and the patient revealed no clinical symptoms throughout and shortly after the procedure. However, 2 h later the patient was found comatose with fixed dilated pupils. Computed tomography demonstrated massive intratumoral, subarachnoid, and subdural hemorrhage. The patient died 1 day later. Delayed hemorrhage may occur after particle embolization of meningiomas. Therefore, patients should be kept under close clinical surveillance after this procedure.
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