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May 1981

Optic Nerve Sheath Meningioma

Author Affiliations

Department of Neurosurgery
Department of Ophthalmology and Neurology University of Pittsburgh School of Medicine Pittsburgh, PA 15213

Arch Neurol. 1981;38(5):326. doi:10.1001/archneur.1981.00510050092027

To the Editor—  We read with interest the report on possible optic nerve meningioma by Ebers et al (Archives 1980;37:781-783). The authors are to be complimented on their removal of a subdural optic nerve sheath meningioma. However, we take issue with their comments relative to a prior article published by us that also involved an optic nerve sheath tumor.1 The authors commented that "the dura was not identified at surgery, and this tumor cannot be classified as an optic nerve sheath meningioma." From the illustration published in our article and the description of the operative findings and technique, it should be very clear to them that the dura was indeed identified, that the tumor was separated from the dura, and that this was clearly an optic nerve sheath tumor.It has become apparent to us from operating on eight patients with optic nerve sheath meningiomas that there are three