<unk>  refers to congenital malformations of displaced normal, mature<unk>  tissue, which are no longer in continuity with an intracranial component. This is distinctly different from an encephalocele, which is a herniation of brain tissue and/or leptomeninges, that develops through a defect in the skull, where there is a continuity with the cranial cavity.
Nasal glial heterotopia
Basilar invagination
Gray matter heterotopia
Dysembryoplastic neuroepithelial tumour
Cranio-lenticulo-sutural dysplasia
Germinal matrix hemorrhage
Cystic hygroma
Choroid plexus papilloma