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Dandy-Walker syndrome in a 6-year-old girl (CT)

(A) Axial cut through 4th ventricle: markedly enlarged 4th ventricle, hypoplastic cerebellar hemispheres. (B) Posterior fossa enlarged, fluid-filled. Lateral ventricles of normal size following ventriculoperitoneal and cystoperitoneal shunt. (C) Posterior fossa cyst extends upward between occipital lobes. (Contributed by Dr. Eugen Boltshauser.)

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