Polymicrogyria

This pathological description is of a cortex with many narrow gyrae in an abnormal pattern and it is often combined with other underlying malformations (Friede 1989) (Fig. 1). Since this abnormality may be associated with a variety of biochemical, genetic, and ischaemic lesions that can cause damage in utero, it should not be regarded as a distinct entity.

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Fig.1

Polymicrogyria, showing widespread excess of small abnormal gyri, perisylvian and parietal



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