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  • Title: Posterior Hemi-/Laminectomy and Facetectomy Approach for the Treatment of Dumbbell-Shaped Schwannomas in the Subaxial Cervical Spine: A Retrospective Study of 26 Cases.
    Author: Huang Y, Wang Z, Chen Z, Wu H, Jian F.
    Journal: Eur Neurol; 2017; 78(3-4):188-195. PubMed ID: 28898892.
    Abstract:
    OBJECTIVE: It is difficult to completely and safely remove a tumor that is located in the subaxial cervical spine by using the posterior approach because of the anatomical characteristics. Previous reports regarding the total removal of subaxial schwannomas using the one-stage posterior approach are still limited. This study was to evaluate the feasibility and efficacy of treating the dumbbell-shaped schwannomas in the subaxial cervical spine using the one-stage posterior approach. METHODS: Patients with dumbbell-shaped schwannomas in the subaxial cervical spine were treated using the one-stage posterior approach. Surgical profile, clinical outcomes, MRI and X-ray images, and complications were investigated. Japanese Orthopaedic Association (JOA) score and McCormick functional schema score were obtained. RESULTS: The average follow-up was 21.5 ± 5.1 months, with a range of 12-31 months. Twenty-six patients were enrolled in the study. Total resection was achieved in all patients using the one-stage posterior approach with hemi- or laminectomy and facetectomy. All cases underwent lateral mass screw fixation and fusion. JOA improved significantly (p < 0.01). The McCormick score improved significantly (p < 0.05) after the surgery. No mortality, morbidity, or tumor recurrence was observed during the follow-up period. CONCLUSION: Our technique was feasible and effective for the treatment of dumbbell schwannomas in the subaxial cervical spine. The tumor could be totally removed in most cases safely.
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