Arnold-Chiari deformity

Arnold-Chiari deformity definition - medical

Ar·nold-Chiari deformity (ärˈnəld-, -nōltˌ-)

noun
A congenital deformity at the base of the brain, often associated with spina bifida, in which the cerebellar tissue is elongated and extends into the fourth ventricle.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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