Optic nerve sheath meningioma-findings in the contralateral optic nerve tract: a case report
- Authors:
- Jan Lestak
- Pavel Haninec
- Martin Kyncl
- Jaroslav Tintera
View Affiliations
Affiliations: JL Clinic, Prague 15800, Czech Republic, Department of Neurosurgery, Third Faculty of Medicine, Charles University, Teaching Hospital Královské Vinohrady, Prague 10034, Czech Republic
- Published online on: March 5, 2020 https://doi.org/10.3892/mco.2020.2012
-
Pages:
411-414
-
Copyright: © Lestak
et al. This is an open access article distributed under the
terms of Creative
Commons Attribution License.
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Abstract
The aim of the present study was to observe visual pathway changes on the contralateral side in optic nerve sheath meningioma (ONSM). The authors present a case report of a 43‑year‑old patient with OfNSM on the right side. A complex ophthalmic examination was performed, including an assessment of visual functions, an electrophysiology examination and functional and structural MRI examinations. Visual acuity of the right eye after ONSM remained with no light perception, while that of the left side was normal. The visual field of the left eye was normal as was colour perception. An electrophysiology examination using a pattern electroretinogram revealed low amplitude values in the right eye. In the left eye, the finding was at the lower limit of normal results. The pattern visual evoked potential exhibited a bilateral lesion with a larger decrease in response after stimulation of the right eye. The structural MRI revealed intraorbital atrophy of the optic nerve on the right side throughout the whole course, which was accompanied by atrophy of the right half of the optic chiasm. Functional magnetic resonance imaging revealed zero activity after stimulation of the right eye and decreased activity in the visual centre after stimulation of the left eye. The present study demonstrated that unilateral damage to the optic nerve in ONSM is accompanied by significant changes on the contralateral side of the optic pathway.
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