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| Optic Nerve Neoplasms Optic Nerve Sheath Tumors | Benign Optic Nerve Neoplasm | Benign Optic Nerve Sheath Neoplasms | Benign Optic Nerve Sheath Tumors | Benign Optic Nerve Tumor | Malignant Optic Nerve Neoplasm | Malignant Optic Nerve Sheath Neoplasms Benign and malignant neoplasms that arise from the optic nerve or its sheath. OPTIC NERVE GLIOMA is the most common histologic type. Optic nerve neoplasms tend to cause unilateral visual loss and an afferent pupillary defect and may spread via neural pathways to the brain. |