Periventricular grey matter heterotopia

Case contributed by A.Prof Frank Gaillard



Patient Data

Age: 20
Gender: Female

A 15 x 8 x 10 mm nodule projects into the trigone of the left lateral ventricle. It has a signal characteristics which match those of cortex on all sequences and demonstrates no abnormal contrast enhancement. There is no convincing abnormality of the overlying cortex. Incidental note is made of a small pineal cyst which measures 10 mm in maximal diameter. No abnormal contrast enhancement.

The remainder of the brain appears normal.


Left sided abnormality is consistent with a focus of grey matter heterotopia.

Case Discussion

Grey matter heterotopia is an important finding in a patient with epilepsy as it can, if solitary, be amenable to resection. It also can prevent inappropriate surgery on the hippocampus. 


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Case information

rID: 28042
Published: 8th Mar 2014
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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