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Published online by Cambridge University Press: 18 September 2015
This is a report of the first recorded observation of displacement of temporal cortex into the central spinal canal in an infant with the Arnold Chiari malformation, platybasia, aqueductal atresia, hydrocephalus and meningomyelocele. The combination of an absent tentorium, absent right cerebellar hemisphere and malformed fourth ventricular roof provided the anatomical background for this unique event.