Multicentric malignant glioma of adulthood masquerading as optic neuritis

Malignant optic nerve glioma of adulthood is a rare tumour that can mimic optic neuritis in its initial presentation.^{1 2} At onset, unilateral decreased vision occurs in 70% of patients; however, a rapid progression to total blindness is usually seen within 3 months and death within 1 to 2 years.³ MRI often shows diffuse enhancement and, later, enlargement of the affected optic nerves, chiasm and tracts. We report a unique, multicentric case of malignant optic nerve glioma involving two exceptionally rare sites, the corpus callosum and cerebellum.

Case report

A previously healthy 48 year-old man was referred for blurry vision of the right eye with pain on eye movement for 1 week. The left eye was 20/20 with an unremarkable examination. Visual acuity of the right eye was 20/400 with a relative afferent pupillary defect (RAPD), central scotoma...