"Chiari 0"
"Chiari 0.5"
"Chiari 1"
"Chiari 1.5"
"Chiari 2"
"Chiari 3"
"Chiari 3.5"
"Chiari 4"
"Chiari 5"
Expected headings
"Classification"
"The description of 'malformation' may not be accurate for Chiari 0, 0.5, 1 and 1.5 because there is evidence that these are defects acquired after birth 8. Thus, the term 'developmental alteration' or 'deformation' has been suggested for these entities instead 8,9. Chiari 2 to 5, on the other hand, are all considered congenital malformations 8."
"The initial description by Hans Chiari in 1891, based on autopsy observations of children, included three types (Chiari 1, 2 and 3). A few years later (see below) he described a fourth type (Chiari 4). Additional types have subsequently been described, raising the total number to nine, although how these conditions are related to each other remains a topic of debate 1,9."
"no cerebellar tonsillar descent ("
"no cerebellar tonsillar descent ("
"cerebellar tonsillar herniation (>5 mm caudal herniation in relation to the foramen magnum); with"
"cerebellar tonsillar (>5 mm caudal herniation), brainstem, and fourth ventricle herniation in relation to the foramen magnum; with"
"similar features to Chiari 2; but with"
"similar features to Chiari 3; but with"