Subcortical heterotopia Mesial parasagittal subcortical heterotopia 2019-02-24T16:07:29Z This pattern is assocatied with Chudlely-McCullough syndrome. Subcortical heterotopia extending along the mesial aspect of the lateral ventricles, with direct connection to mesial polymicrogyria-like cortex at the anterior and posterior limits of the heterotopia.