摘要: Spontaneous dural arteriovenous fistulas (DAVFs) are abnormal shunts within the dura mater of sinuses. The exact etiology remains uncertain. Arterial feeder derive from meningeal branches in region. clinical symptoms highly dependent on venous drainage. Computed tomography (CT) and magnetic resonance imaging (MRI) demonstrate epiphenomena rather than DAVF itself. Angiography is most important modality evaluating a DAVF. Based patterns drainage, classification treatment strategy possible. Therapeutic modalities include manual compression, transarterial embolization, transvenous and/or surgical resection. Recent technical advances concerning embolic material microcatheter make endovascular less dangerous more effective.
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