Abstract
Background
The resection of tuberculum sellae meningiomas poses a challenge particularly when dealing with the medial aspect of the optic nerve. Dissection of the tumor off the optic nerve is usually carried out in the blind spot “behind” the optic nerve. We describe a contralateral approach for asymmetric tuberculum sellae meningiomas, allowing direct visualization of the medial optic nerve.
Method
Contralateral lateral supraorbital approach was performed, and complete tumor resection was achieved without any injury to the optic nerve.
Conclusion
The contralateral approach for asymmetric tuberculum sellae meningioma is an efficient technique allowing improved visualization of the medial optic nerve.
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Key Points
1. Proper patients selection with asymmetric TS meningiomas with lateral or superior-lateral displacement of the optic nerve
2. Low frontal craniotomy with drilling of orbital rim and orbital roof
3. Identification of ipsilateral unaffected optic nerve, ipsilateral ACA (A1) and chiasm
4. Early identification of contralateral optic nerve
5. Preserving arachnoid plane on the optic nerve
6. Avoiding electrocautery on the optic nerve
7. Identification of the take-off of the ophthalmic artery
8. Transection of falciform ligament to release optic nerve
9. Cauterization/drilling of the dural attachment at the origin at tuberculum sellae
10. Preserving pituitary stalk and superior hypophyseal artery
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This article is part of the Topical Collection on Tumor - Meningioma
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Video demonstrates efficacy of contralateral lateral supraorbital approach with superior visualization of the medial aspect of contralateral optic nerve in patient with asymmetric tuberculum sellae meningioma.
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Peto, I., White, T.G. & Dehdashti, A.R. How I do it: contralateral supraorbital approach for tuberculum sellae meningioma. Acta Neurochir 162, 613–616 (2020). https://doi.org/10.1007/s00701-019-04205-8
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DOI: https://doi.org/10.1007/s00701-019-04205-8