Neuroimaging in disorders of cortical development

Area of Science:

• Neuroscience
• Developmental Biology
• Medical Imaging

Background:

• Malformations of cortical development (MCDs) are a significant cause of pediatric neurological disorders, including developmental delay and epilepsy.
• These conditions arise from disruptions during critical stages of fetal brain development.
• Accurate classification and understanding of MCDs are crucial for diagnosis and management.

Purpose of the Study:

• To review and classify major malformations of cortical development.
• To elucidate the developmental mechanisms underlying these malformations.
• To correlate specific malformations with their characteristic imaging findings.

Main Methods:

• Review of current literature on malformations of cortical development.
• Classification of MCDs based on the presumed stage of developmental interruption (neuronal proliferation/differentiation, migration, cortical organization).
• Discussion of pathogenetic mechanisms and illustrative imaging features for each malformation type.

Main Results:

• MCDs are categorized into three main groups based on developmental timing.
• Detailed descriptions of specific malformations within each category are provided.
• Key imaging findings associated with each type of malformation are highlighted.

Conclusions:

• Understanding the classification and pathogenesis of MCDs is essential for accurate diagnosis.
• Knowledge of imaging findings aids in identifying and characterizing these developmental brain abnormalities.
• Improved comprehension of MCDs can enhance genetic counseling and inform epilepsy treatment strategies.