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A 74-year-old woman gave a 6-month history of predominately right-sided parietal headaches, often worse on waking. Her history included left phthisis bulbi (atrophy and calcification of the eye), resulting from multiple attempted surgical repairs for retinal detachment 20 years previously. She wore a coloured contact lens over her left eye for cosmetic purposes. Neurological examination was normal.
An unenhanced CT brain scan of her head demonstrated a high-attenuation abnormality in the left vitreous cavity with posterior extension along the optic nerve. There were further foci of high attenuation in the suprasellar region and in the frontal horn of the right lateral ventricle (figures 1 …
Contributors JC—concept and drafting article. ID—image selection and drafting article. DW—review of article and legends. SJ—review of article.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed. This paper was reviewed by Mark Manford, Cambridge, UK.