Recent development in neuronal migration disorders: Clinical, neuroradiologic and genetics aspects

Paola Iannetti, Alberto Spalice, Laura Papetti, Pasquale Parisi

Research output: Contribution to journalArticle

Abstract

Disorders of neuronal migration are a heterogeneous group of disorders of nervous system development. One of the most frequent disorders is lissencephaly characterized by a paucity of normal gyri and sulci resulting in a "smooth brain". There are two pathologic subtypes: classical and cobblestone. Classical lissencephaly results from an arrest of neuronal migration, whereas cobblestone lissencephaly results from overmigration. Another important neuronal migration disorder is heterotopia characterized by a cluster of normal neurons in abnormal locations and it is divided into three main groups: periventricular nodular heterotopia, subcortical heterotopia and marginal glioneural heterotopia. Polymicrogyria develops at the last stages of neuronal migration to the earliest phases of cortical organization; bilateral frontoparietal form is characterized by bilateral, symmetric polymicrogyria in the frontoparietal regions. Bilateral perisylvian polymicrogyria results in a clinical syndrome manifested by mild mental retardation, epilepsy and pseudobulbar palsy. Schizencephaly is another important disorder of neuronal migration whose clinical characteristics are extremely variable. Focal cortical dysplasia represents one of most severe causes of epilepsy in children. This review reports the main clinical, genetical, neuroradiological aspects of these disorders.

Original languageEnglish
Pages (from-to)216-226
Number of pages11
JournalCurrent Pediatric Reviews
Volume4
Issue number4
DOIs
Publication statusPublished - 2008

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Group II Malformations of Cortical Development
Lissencephaly
Cobblestone Lissencephaly
Epilepsy
Periventricular Nodular Heterotopia
Pseudobulbar Palsy
Malformations of Cortical Development
Nervous System Diseases
Intellectual Disability
Neurons
Brain
Polymicrogyria

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

Cite this

Recent development in neuronal migration disorders : Clinical, neuroradiologic and genetics aspects. / Iannetti, Paola; Spalice, Alberto; Papetti, Laura; Parisi, Pasquale.

In: Current Pediatric Reviews, Vol. 4, No. 4, 2008, p. 216-226.

Research output: Contribution to journalArticle

Iannetti, Paola ; Spalice, Alberto ; Papetti, Laura ; Parisi, Pasquale. / Recent development in neuronal migration disorders : Clinical, neuroradiologic and genetics aspects. In: Current Pediatric Reviews. 2008 ; Vol. 4, No. 4. pp. 216-226.
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