<radiology> Chiari I herniation of medulla and cerebellar tonsils, 4th ventricle in normal position, Chiari II herniation of medulla, tonsils, vermis, 4th ventricle at foramen magnum, myelomeningocele, aqueductal stenosis most likely to be hydrocephalus, Chiari III further herniation, 4th ventricle below foramen magnum, encephalocele or myelo
Found on http://www.mondofacto.com/facts/dictionary?arnold-chiari+malformation
(from the article `nervous system disease`) ...may be associated with projection of the vertebral column upward. This condition may also occur in association with bone diseases such as ...
Found on http://www.britannica.com/eb/a-z/a/103
A congenital defect of the brain in which the brain tissue protrudes through the foramen magnum down into the upper cervical canal. Hydrocephalus is common in individuals with Arnold-Chiari Malformation and the brainstem, cranial nerves, and the lower portion of the cerebellum may be stretched or compressed. Common symptoms include breathing diif..
Found on http://www.pregnology.com/AZ/A/9
Type: Term Pronunciation: ar′nŏld kē-ah′rē Definitions: 1. malformed posterior fossa structures associated with caudad traction and displacement of the rhombencephalon as caused by tethering of the spinal cord; may be accompanied in some cases by spina bifida and associated anomalies such as meningomyelocele; usually mult
Found on http://www.medilexicon.com/medicaldictionary.php?t=52452
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