I.06 Dysembryoplastic neuroepithelial tumour

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PI.06.a1 Dysembryoplastic neuroepithelial tumour (frontobasal surgical specimen). Irregular thickening of the cerebral cortex with multiple cortical and subcortical nodules. This complex tumour consists of a mixture of glial cells and nerve cells and is often associated with dysplastic cortical foci. It can occur in any part of the brain and generally causes long-standing focal seizures.