The Chiari II malformation: Part IV. The hindbrain deformity |
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| Authors: | T. P. Naidich D. G. McLone K. H. Fulling |
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| Affiliation: | (1) Department of Radiology, Northwestern University Medical School, Chicago, Illinois, USA;(2) Department of Surgery, Division of Neurosurgery, Northwestern University Medical School, Chicago, Illinois, USA;(3) The Children's Memorial Hospital, Chicago, Illinois, USA;(4) Department of Pathology, Division of Neuropathology, Washington University Medical School, St. Louis, Missouri, USA |
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| Abstract: | Summary Computed tomography successfully delineates the multiple components of the Chiari II malformation at the craniocervical junction, the hindbrain, and the cervical spinal cord. These include wide foramen magnum and upper cervical spinal canal; incomplete fusions of the posterior arches of C1 and lower cervical vertebrae; cascading protrusions of vermis, fourth ventricle, medulla, and cervical cord into the spinal canal; cervicomedullary  kinking ; anterior displacement and sequential sagittal compression of each protrusion by the protrusions posterior to it; compression of all protrusions by the posterior lip of foramen magnum and the posterior arch of C1; and associated cervical hydromyelia, cervical diastematomyelia, and cervical arachnoid cysts.Presented in part at the CT '82, International Computer Tomography Symposium, Seefeld/Tirol, Austria, 28–30 January 1982; and presented in nearly complete form at the 10th Annual Meeting of the International Society for Paediatric Neurosurgery, Philadelphia, Pennsylvania, USA, 12–15 September 1982 |
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| Keywords: | Brain, abnormalities cerebellum Chiari II malformation computer tomography, head computed tomography, spine hydrocephalus medulla oblongata myelography, metrizamide myelomeningocele skull, abnormalities spinal cord spine, abnormalities vermis |
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