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Title: Spinal dural arteriovenous fistulas
Authors: T. Krings
S. Geibprasert
Hospital for Sick Children University of Toronto
Medizinische Fakultat und Universitats Klinikum Aachen
Hopital de Bicetre
Mahidol University
University of Toronto
Keywords: Medicine
Issue Date: 1-Apr-2009
Citation: American Journal of Neuroradiology. Vol.30, No.4 (2009), 639-648
Abstract: Spinal dural arteriovenous (AV) fistulas are the most commonly encountered vascular malformation of the spinal cord and a treatable cause for progressive para- or tetraplegia. They most commonly affect elderly men and are classically found in the thoracolumbar region. The AV shunt is located inside the dura mater close to the spinal nerve root where the arterial blood from a radiculo- meningeal artery enters a radicular vein. The increase in spinal venous pressure leads to decreased drainage of normal spinal veins, venous congestion, and the clinical findings of progressive myelopa- thy. On MR imaging, the combination of cord edema, perimedullary dilated vessels, and cord enhancement is characteristic. Therapy has to be aimed at occluding the shunting zone, either by superselec- tive embolization with a liquid embolic agent or by a neurosurgical approach. Following occlusion of the fistula, the progression of the disease can be stopped and improvement of symptoms is typically observed.
ISSN: 01956108
Appears in Collections:Scopus 2006-2010

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