Journal
NEUROIMAGING CLINICS OF NORTH AMERICA
Volume 21, Issue 3, Pages 483-+Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.nic.2011.05.014
Keywords
Cortex, development; Focal cortical dysplasia; Microcephaly; Macrocephaly; Lissencephaly; Cobblestone brain; Nodular heterotopia; Schizencephaly; Polymicrogyria
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The cerebral cortex develops in several stages from a pseudostratified epithelium at 5 weeks to an essentially complete cortex at 47 weeks. Cortical connectivity starts with thalamocortical connections in the 3rd trimester only and continues until well after birth. Vascularity adapts to proliferation and connectivity. Malformations of cortical development are classified into disorders of specification, proliferation/apoptosis, migration, and organization. However, all processes are intermingled, as for example a dysplastic cell may migrate incompletely and not connect appropriately. However, this classification is convenient for didactic purposes as long as the complex interactions between the different processes are kept in mind.
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