Classification system of foramen magnum meningiomas
| Autor: | Michael Bruneau, Bernard George |
|---|---|
| Přispěvatelé: | Neurosurgery |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Foramen magnum
Surgical approach lcsh:Diseases of the musculoskeletal system surgical approach business.industry tumor - vertebral artery Vertebral artery Cranial nerves foramen magnum Dentate ligament Anatomy medicine.disease meningioma Surgical morbidity Meningioma surgery medicine.anatomical_structure classification medicine.artery medicine Original Article Neurology (clinical) lcsh:RC925-935 Compartment (pharmacokinetics) business |
| Zdroj: | Journal of Craniovertebral Junction and Spine Journal of Craniovertebral Junction and Spine, Vol 1, Iss 1, Pp 10-17 (2010) |
| DOI: | 10.4103/0974-8237.65476 |
| Popis: | Background: Foramen magnum meningiomas (FMMs) are challenging tumors. We report a classification system based on our experience of 107 tumors. Materials and Methods: The three main algorithm criteria included the compartment of development of the tumor, its dural insertion, and its relation to the vertebral artery. Results: The compartment of development was most of the time intradural (101/107, 94.4%) and less frequently extradural (3/107, 2.8%) or both intra-extradural. (3/107, 2.8%). When developed inside the intradural compartment, FMMs were subdivided into posterior (6/104, 5.8%), lateral (57/104, 54.8%), and anterior (41/104, 39.4%), if their insertion was respectively posterior to the dentate ligament, anterior to the dentate ligament without or with extension over the midline. Anterior and lateral intradural lesions grew below (77/98, 78.6%), above (16/98, 16.3%), or on both sides (5/98, 5.1%) of the VA. Only three cases of extraduralFMMs (3/107, 2.8%) were resected by an antero-lateral approach while all the other ones (104/107, 97.2%) were removed successfully by a postero-lateral approach. Lower cranial nerves were displaced superiorly in FMM growing below the VA but their position cannot be anticipated in other situations. Conclusions: This classification system helps for defining the best surgical approach but also for anticipating the position of the lower cranial nerves and therefore for reducing the surgical morbidity. |
| Databáze: | OpenAIRE |
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