title: Definition of the adult Chiari malformation: a brief historical overview.
abstract: With the widespread use of newer neuroimaging techniques and modalities, significant tonsillar herniation is being diagnosed in more than 0.5% of patients, some of whom are asymptomatic. This puts the definition of the adult Chiari malformation to the test. The author provides a historical review of the evolution of the definition of the adult Chiari malformation in the neurosurgery, radiology, and pathology literature.
authors.affiliation: Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA. bejjanigk@msx.upm.edu
authors.forename: G K
authors.initials: GK
authors.lastname: Bejjani
mesh_terms: D001139:Arnold-Chiari Malformation / Q000175:diagnosis* / Q000266:history*; D005539:Foramen Magnum / Q000473:pathology; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods