A case of optic nerve choristoma
Published in the Saudi Journal of Ophthalmology, the authors present a case of a 29-year-old female with progressive and complete visual loss in her right eye over a four-year duration. Radiographically, a T2-weighted, bright signal proximal to the optic chiasm was identified.

A right frontal supraorbital craniotomy was performed that revealed a slightly white and congested optic nerve with a gritty consistency. Histopathologic examination demonstrated an admixture collection of benign adipose tissue, smooth muscle elements, and optic nerve tissue, consistent with an optic nerve choristoma.

Immunohistochemical stains for smooth muscle actin (SMA) and glial fibrillary acidic protein (GFAP) highlight the smooth muscle component and optic nerve tissue, respectively.

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