Abstract
Optic nerve sheath meningiomas (ONSMs) are rare orbital tumours and represent 1–2% of all meningiomas. They occur more commonly in middle-aged females and can lead to slow, progressive blindness. They are known to be associated with neurofibromatosis type 2 (NF-2). Sphenoidal wing meningiomas arise from the meningothelial cells of arachnoid on the inner surface of the dura. They make up about 13–18% of all intracranial tumours. They present with proptosis, visual impairment, and ocular motility disturbance due to the expansion and encroachment of the mass into the superior orbital fissure.
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Further Reading
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Sughrue ME, Rutkowski MJ, Chen CJ, Shangari G, Kane AJ, Parsa AT, et al. Modern surgical outcomes following surgery for sphenoid wing meningiomas. J Neurosurg. 2013;119:86–93.
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Lin, H.A. et al. (2019). Meningioma. In: Amrith, S., Sundar, G., Young, S. (eds) Ocular Adnexal Lesions. Springer, Singapore. https://doi.org/10.1007/978-981-13-3798-7_27
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DOI: https://doi.org/10.1007/978-981-13-3798-7_27
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