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  • Title: [Endovascular treatment of dural arteriovenous fistulas with medullary venous drainage. Experience with 18 patients].
    Author: Marey J, Pego R, Alonso G, López-Facal MS, Marin M, Martínez A, Díaz-Valiño JL.
    Journal: Rev Neurol; 1998 May; 26(153):793-9; discussion 799-800. PubMed ID: 9634671.
    Abstract:
    INTRODUCTION AND OBJECTIVE: The authors report a series of 18 patients with myelopathy who were diagnosed of dural arteriovenous fistulas with venous medullary drainage (DFVMd). Purpose was to assess the effectiveness, initial and long term, of embolization, as the initial treatment, using polyvinyl alcohol particles (PVA) and liquid adhesives. N-butyl-cyanoacrylate (NBCA). MATERIAL AND METHODS: Magnetic resonance images were obtained in all patients showing spinal cord tissue changes consistent with an isquemic process secondary to venous hypertension. All 18 patients showed initially an improvement in clinical symptoms, demonstrating previous MR images resolution. RESULTS: The neurological status of 8 patients subsequently deteriorated with angiographically proven recurrences of their DFVMd. These patients underwent a second successful embolization procedure using NBVA. PVA embolization is long term ineffective and is not without risk. Endovascular treatment is less invasive than surgery, its morbidity is less, and it ensures earlier recovery for the patients. If embolization has failed, surgery can still be done. CONCLUSIONS: We recommend that NBVA embolization be the initial treatment of choice for DFVMd if referring the patient to an experienced interventional Neuroradiology unit is available. Careful clinical and neurologic examination is necessary to establish the diagnosis of DFVMd. Finally, we strongly recommend that patients be followed closely and aggressively. Periodic clinical and radiologic assessments, including MR and spinal angiography, are essential to achieve complete cure.
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