A white lesion in the retina: what could it be?
A 16-year-old girl presented with blurry vision. She had no other symptoms and was otherwise healthy with no medical history of any disease or surgeries. She was not taking any medications. Her family history was also unremarkable.

The patient’s best-corrected visual acuity was 20/20 OU, results of pupillary examination were normal without relative afferent pupillary defect, and results of the rest of the anterior segment examination were unremarkable. Posterior segment examination of the right eye revealed a slightly elevated, white, multicystic lesion approximately 3 disc diameters that was located inferior to the optic nerve. Results of examination of the left eye were unremarkable. The patient’s blurred vision was resolved with new eyeglasses.

The patient was finally diagnosed with retinal astrocytoma.

This patient presented with a classic-appearing mulberry lesion compatible with a diagnosis of retinal astrocytoma, which is a rare benign glioma. Presence of retinal astrocytoma is associated with tuberous sclerosis complex (TSC) in some patients.

All patients presenting with retinal astrocytoma should undergo magnetic resonance imaging (MRI) of the brain because of its association with TSC and its related central nervous system involvement.

Read more here: https://jamanetwork.com/journals/jamaophthalmology/article-abstract/2684567
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