A case of schizencephaly with polymicrogyria

Area of Science:

• Neuroscience
• Developmental Neuroscience
• Neuroradiology

Background:

• Schizencephaly is a rare congenital brain malformation characterized by a cleft in the cerebral hemisphere.
• Polymicrogyria involves an abnormal cortical development with excessive gyri.
• These conditions represent failures in neuronal migration and cortical organization.

Observation:

• A 22-year-old male presented with headaches after mild head trauma.
• Magnetic Resonance (MR) imaging incidentally revealed extensive bilateral frontotemporal schizencephaly, more pronounced on the left.
• Associated polymicrogyria was also noted.
• Initial neurological examination was negative, and symptoms resolved within weeks.

Findings:

• The case illustrates an incidental discovery of significant cortical malformations (schizencephaly and polymicrogyria).
• The absence of neurological deficits despite the extensive anomaly is a key observation.
• The study underscores the varied clinical presentations of cortical development disorders.

Implications:

• Accurate prenatal and postnatal differential diagnosis between schizencephaly, porencephaly, and other cortical developmental failures is crucial.
• Understanding the etiology and spectrum of these malformations aids in clinical management.
• This case highlights the role of advanced neuroimaging in identifying subtle or asymptomatic brain anomalies.