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Radiology, Vol 127, 681-686, Copyright © 1978 by Radiological Society of North America

ARTICLES

Enlarged cisternae magnae and posterior fossa cysts simulating Dandy- Walker syndrome on computed tomography

CA Archer, H Darwish and K Smith Jr

Computed tomography was performed on 5 children with posterior fossa cystic abnormalities. On an axial tomogram, an enlarged cisterna magna could not be distinguished from a Dandy-Walker variant, nor could an encysted fourth ventricle be distinguished from a subarachnoid cyst. Supplementary air encephalography or sagittal reconstruction of tomograms is necessary to define posterior fossa cysts accurately.




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