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  • Title: Surgical Treatment of Spinal Dural Arteriovenous Fistula: Management and Long-Term Outcome in a Single-Center Series.
    Author: Schuss P, Daher FH, Greschus S, Vatter H, Güresir E.
    Journal: World Neurosurg; 2015 Jun; 83(6):1002-5. PubMed ID: 25731793.
    Abstract:
    OBJECTIVE: To perform a retrospective chart review of surgically treated patients with spinal dural arteriovenous fistula (SDAVF), a rare disease but the most common vascular malformation of the spine, focusing on clinical characteristics and functional outcome during long-term follow-up. METHODS: Between June 1990 and April 2012, 29 patients with SDAVFs were treated surgically in a single institution. Patient characteristics, time from onset of symptoms to treatment, radiologic features, treatment-related complications, and functional outcome were analyzed. Outcome was assessed according to the Aminoff-Logue scale during follow-up. Results of magnetic resonance imaging scans performed during long-term follow-up were correlated with functional outcome. RESULTS: There were 3 female (10%) and 26 male (90%) patients with SDAVFs treated surgically. Mean age was 61 years ± 11. Location of the fistula was at the thoracic level in 20 patients (69%), at the lumbar level in 8 patients (28%), and at the sacral level in 1 patient (3%). Mean postoperative Aminoff-Logue scale scores regarding gait and micturition improved after treatment compared with preoperatively (P = 0.02; P = 0.03). After surgical treatment, 22 patients (76%) achieved improvement in neurologic symptoms. In 6 patients (21%), neurologic status was the same as preoperatively. In 1 patient (3%), neurologic status worsened. Medullary signal alteration of diagnostic magnetic resonance imaging scans did not correlate with functional outcome (P = 0.2). Mean follow-up time was 63 months ± 55. All SDAVFs were treated in a single session without recurrence during the long-term follow-up period. CONCLUSIONS: Surgical treatment of SDAVFs is safe and effective and leads to an improvement of neurologic symptoms in most patients. Surgical treatment of SDAVFs also provides long-term stability.
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