Optic Nerve Haemangioblastoma: Signs of Chronicity.

Optic nerve haemangioblastomas remain exceedingly rare extrinsic tumours of the optic nerve, often associated with von Hippel-Lindau disease. The authors report a 25-year-old female with a slowly progressive unilateral optic nerve lesion, causing reduced vision and bilateral optic tract oedema. A diagnosis of optic nerve haemangioblastoma with piloid gliosis was made histologically after surgical resection. This is the first reported case of such dual pathology occurring in the optic nerve. The patient has been monitored without further adjuvant treatment, and has not had a recurrence to date, at 6 years of follow-up.