Show pageBacklinksCite current pageExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. =====Primary orbital meningioma===== Primary [[orbital meningioma]]s arise from the optic nerve sheath and may extend through the optic canal intracranially, or they may infiltrate the sphenoid wing producing hyperostosis. Nearly two thirds of orbital tumors, however, originate from outside the confines of the orbit Rarely ectopic rests of arachnoid cells give rise to orbital meningiomas separate from the optic nerve sheath. see [[Orbital Roof Meningioma]] primary_orbital_meningioma.txt Last modified: 2024/06/07 02:57by 127.0.0.1