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There is a developmental anomaly involving both cerebral hemispheres, worse on the right. There is grey matter heterotopia on the right with multiple islands of grey matter seen adjacent to the lateral ventricle, particularly anteriorly. There is polymicrogyria centred on the sylvian fissure with moderate thickening of the insular and extending into the operculum.
On the left hand side there are some subtle small areas of grey matter heterotopia.