band heterotopia

band heterotopia
laminar heterotopia an anomaly of the cerebral cortex in which a heterotopic band of gray matter is found between the lateral ventricles and the cortex; affected patients may have mental retardation or epilepsy.

Band heterotopia in a T1 weighted MRI scan. A thin layer of white matter (black arrow) lies between the band of heterotopic gray matter and the cortical surface. Failure of cortical organization with lissencephaly is present in both frontal lobes (white arrow).

Medical dictionary. 2011.

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