Optic Nerve Sheath Meningioma, also known as meningioma of optic nerve sheath, is related to orbital cancer and optic nerve glioma, and has symptoms including headache and seizures. An important gene associated with Optic Nerve Sheath Meningioma is NF2 (NF2, Moesin-Ezrin-Radixin Like (MERLIN) Tumor Suppressor). Affiliated tissues include eye and cervix, and related phenotypes are Increased proliferation and growth/size/body region