Arachnoid hyperplasia

Last revised by Aneta Kecler-Pietrzyk on 9 Aug 2018

Arachnoid hyperplasia refers to an extensive thickening of meninges surrounding optic glioma often seen in patients with neurofibromatosis.

It appears as high signal on T2 sequences surrounding the low signal glioma and resembles perineural CSF space.


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