Subependymal grey matter heterotopia

Case contributed by Narek Matinyan


The patient has epilepsy with generalized seizures.

Patient Data

Age: 19 years
Gender: Female

Bilateral multiple subependymal nodules are seen, which have the same MR signal characteristics as the grey matter.

A retrocerebellar arachnoid cyst is also seen.

Case Discussion

MRI of the brain demonstrates multiple subependymal nodules, which have the same MR-signal characteristics as the cortex, without any signs of contrast enhancement.  This case illustrates typical features of subependymal grey matter heterotopia, which is a relatively common cause of epilepsy. 

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