Chiari type II malformation

Case contributed by Ahmed Abdrabou
Diagnosis almost certain

Presentation

Delayed mental and motor milestones. The patient had VP shunt operation for hydrocephalus.

Patient Data

Age: 1 year
Gender: Male
ct

Crowded posterior fossa, slit like 4th ventricle, herniation of cerebellar tonsils, fenestrated falx with interdigitated gyri, heart shape incisura, tower cerebellum, colpocephaly and agenesis of corpus callosum.

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