Periventricular grey matter heterotopia

Case contributed by A.Prof Frank Gaillard

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Seizure

Patient Data

Age: 20
Gender: Female
Modality: MRI

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.

Conclusion:

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
Case created: 7th Mar 2014
Last edited: 29th Oct 2015
Inclusion in quiz mode: Included

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