Enlargement of the optic nerves is uncommon. Swelling of the optic nerves has a surprisingly broad differential.
Aetiology
-
neoplastic
- optic nerve glioma
- optic nerve meningioma
- leukaemia
- orbital lymphoma
- metastases
- juvenile xanthogranuloma
- medulloepithelioma
- involvement by retinoblastoma
- cyst of optic nerve sheath
- non-malignant infiltrative disease
- metabolic anomalies
- inflammatory
-
vascular lesion
- perioptic haemorrhage
- central retinal vein occlusion
- aneurysm of ophthalmic artery
- haemangioma
- varix
- venous occlusion
- others
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