Health / Medical Topics |
Optic Nerve Neoplasm
Definition 1
Benign and malignant neoplasms which arise from or metastasize to the optic or second cranial nerve which extends from the optic disc of the eye and joins the optic chiasm. Clinical features may include visual loss, proptosis, and local pain. The majority of optic nerve tumors or optic gliomas. (NCI Thesaurus)
Definition 2
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. (NLM, Medical Subject Headings)
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