Magnetic resonance imaging in lissencephaly

Area of Science:

• Neuroimaging
• Developmental Biology
• Medical Diagnostics

Background:

• Lissencephaly, a brain malformation characterized by a smooth brain surface, presents diagnostic challenges.
• Computer-assisted tomography (CT) can identify key features of lissencephaly but has limitations in visualizing certain structures.

Observation:

• A patient presented with clinical signs suggestive of brain malformation.
• CT scans revealed lissencephaly (agyria, pachygyria, absent opercularization, colpocephaly) but no seizures or hypsarrhythmia on EEG.
• Magnetic resonance imaging (MRI) with a long inversion-recovery sequence confirmed CT findings and identified heterotopic grey matter and a missing claustrum.

Findings:

• MRI demonstrated an altered grey and white matter ratio more effectively than CT.
• The high contrast and multiplanar capabilities of MRI make it superior for evaluating lissencephaly.
• MRI confirmed lissencephaly as part of a complex, potentially new clinical entity involving lymphatic, skeletal, and dental anomalies.

Implications:

• MRI is the preferred imaging modality for diagnosing lissencephaly and other complex brain malformations.
• This case expands the understanding of lissencephaly's potential association with systemic abnormalities.
• Further research is needed to define this unknown clinical entity and its underlying mechanisms.