Artikel
Foramen magnum meningiomas – our experience of the last 19 years
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Autoren
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U.M. Bäzner
- Neurochirurgische Klinik der Universität Ulm, Bezirkskrankenhaus Günzburg
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G. Antoniadis
- Neurochirurgische Klinik der Universität Ulm, Bezirkskrankenhaus Günzburg
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J. Oberhoffer
- Neurochirurgische Klinik der Universität Ulm, Bezirkskrankenhaus Günzburg
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C.R. Wirtz
- Neurochirurgische Klinik der Universität Ulm, Bezirkskrankenhaus Günzburg
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J.A. Kandenwein
- Neurochirurgische Klinik der Universität Ulm, Bezirkskrankenhaus Günzburg
| Veröffentlicht: | 4. Juni 2012 |
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Gliederung
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Objective: Because of the vicinity of the lower cranial nerves, the vertebral artery and the medulla oblongata, Foramen magnum meningiomas are challenging tumors. Our aim is to analyse the surgical approach, the radiological and clinical findings as well as the long-term results.
Methods: Between 1992 and 2011, 20 patients underwent an operation in our department. All patients were operated by posterior lateral approach – in 18 patients intraoperative monitoring of the lower cranial nerves was performed. Based on the preoperative MRI, the localisation of the tumor was classified as ventral (4), ventrolateral (12), dorsal (1) and dorsolateral (3). Eight patients were males, ten females, ranging in age from 12–85 years (mean age: 56).
Results: The preoperative and postoperative function was classified by the McCormick scale. Total removal of the tumor was achieved in 18 patients (Simpson 1/2). The follow-up period varied from 24–134 months (mean: 52.5 months), no recurrence was observed during this era.
Conclusions: The extent of the surgical approach must be planned individually – having regard to the dural attachment and the striking distance of the lower cranial nerves. Foramen magnum meningiomas can be safely and completely resected by posterior suboccipital approach – using consequently intraoperative monitoring.
