Combined supra/infratentorial approach to tentorial meningiomas Abordagem combinada supra e infratentorial aos meningiomas tentoriais
In spite of significant advancements in imaging technology, monitoring, and microsurgical techniques, complete and safe removal of tentorial meningiomas remains a challenge for most neurosurgeons. Classifications of tentorial meningiomas are revised. The combined supra/infratentorial approach to res...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Academia Brasileira de Neurologia (ABNEURO)
2005-03-01
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Series: | Arquivos de Neuro-Psiquiatria |
Subjects: | |
Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2005000100010 |
Summary: | In spite of significant advancements in imaging technology, monitoring, and microsurgical techniques, complete and safe removal of tentorial meningiomas remains a challenge for most neurosurgeons. Classifications of tentorial meningiomas are revised. The combined supra/infratentorial approach to resects tentorial meningioma is discussed. This approach provides a wider exposure of the supra/infratentorial region with less brain retraction. With this approach the occipital lobe and the cerebellum are exposed along the tentorium. Two illustrative cases are presented. The patients were studied with computerized tomography, magnetic resonance and angiography. The anatomy of the transverse sinus and the confluence of the sinus could be appreciated with these studies. The operative technique is described stepwise. Emphasis is placed on pre-operative evaluation and surgical technique, leading to a total surgical removal of the lesion with margins of safety. The goal of surgical treatment of tentorial meningiomas is their complete and safe removal. With this unique approach we sought to confirm that it offers a safe means of resection not only the neoplasm but also the infiltrated dura.<br>Apesar dos significativos avanços na tecnologia de imagens, nas técnicas de monitorização e microcirúrgicas, a ressecção completa e segura dos meningiomas tentoriais permanece um desafio para maioria dos neurocirurgiões. A abordagem supra e infra-tentorial proporciona ampla exposição das regiões supra e infratentoriais diminuindo a retração cerebral. Com esse tipo de abordagem o lobo occiptal e o cerebelo são expostos ao longo da superficie tentorial. Dois casos ilustrativos são apresentados. Os pacientes foram avaliados com tomografia computadorizada, ressonância magnética e angiografia, o que permitiu estudar a anatomia do seio transverso, a confluência e dominancia dos seios. O objetivo do tratamento cirúrgico dos meningiomas tentoriais é a remoção completa e segura. A associação das imagens, o acesso combinado e a técnica microcirúrgica permitem a remoção cirúrgica total deste tipo de lesão e do implante dural com margens de segurança. |
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ISSN: | 0004-282X 1678-4227 |