Arnold-Chiari malformation classification: Difference between revisions
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{{Arnold-Chiari malformation}} | {{Arnold-Chiari malformation}} | ||
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== Overview == | |||
Arnold chiari malformation may be classified according to [[herniation]] content into 4 subtypes. Type 1 has [[herniation]] of [[Cerebellar tonsil|cerebellar tonsils]]. Type 2 has [[herniation]] of [[Cerebellar tonsil|cerebellar tonsils]] and [[Cerebellar vermis|vermis]]. Type 3 has [[herniation]] of [[cerebellar tonsil]] and [[Cerebellar vermis|vermis]] and lower [[brain stem]]. Type 4 has [[cerebellar hypoplasia]] with [[brain stem]] in [[posterior fossa]]. | |||
== Classification == | == Classification == | ||
Arnold chiari malformation may be classified according to herniation content into 4 subtypes:<ref name=" | Arnold chiari malformation may be classified according to [[herniation]] content into 4 subtypes:<ref name="pmid26246090">{{cite journal |vauthors=Cotes C, Bonfante E, Lazor J, Jadhav S, Caldas M, Swischuk L, Riascos R |title=Congenital basis of posterior fossa anomalies |journal=Neuroradiol J |volume=28 |issue=3 |pages=238–53 |date=June 2015 |pmid=26246090 |pmc=4757284 |doi=10.1177/1971400915576665 |url=}}</ref> | ||
{| | {| | ||
! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Subtypes | ! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Subtypes | ||
! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Explanation | ! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Explanation | ||
!Association | ! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Association | ||
|- | |- | ||
! style="background: #DCDCDC; text-align: center;" |Type1 | ! style="background: #DCDCDC; text-align: center;" |Type1 | ||
| style="background: #F5F5F5;" |Herniation parts: | | style="background: #F5F5F5;" |[[Herniation]] parts: [[Cerebellar tonsils]] | ||
* | * | ||
| | | style="background: #F5F5F5;" |[[Syringomyelia]] | ||
|- | |- | ||
! style="background: #DCDCDC; text-align: center;" |Type 2 | ! style="background: #DCDCDC; text-align: center;" |Type 2 | ||
| style="background: #F5F5F5;" |Herniation parts: | | style="background: #F5F5F5;" |[[Herniation]] parts: [[Cerebellar tonsils]] and [[vermis]] | ||
* | * | ||
| | | style="background: #F5F5F5;" |Lumbosacral [[myelomeningocele]] | ||
|- | |- | ||
! style="background: #DCDCDC; text-align: center;" |Type 3 | ! style="background: #DCDCDC; text-align: center;" |Type 3 | ||
| style="background: #F5F5F5;" |Herniation parts: | | style="background: #F5F5F5;" |[[Herniation]] parts: [[Cerebellar tonsil]] and [[vermis]], lower [[brain stem]] | ||
* | * | ||
| | | style="background: #F5F5F5;" |[[Occipital]] [[encephalocele]] | ||
|- | |- | ||
! style="background: #DCDCDC; text-align: center;" |Type 4 | ! style="background: #DCDCDC; text-align: center;" |Type 4 | ||
| style="background: #F5F5F5;" |Herniation parts: Brain stem located in posterior fossa, underdeveloped cerebellum | | style="background: #F5F5F5;" |[[Herniation]] parts: [[Brain stem]] located in [[posterior fossa]], underdeveloped [[cerebellum]] | ||
* | * | ||
| | | style="background: #F5F5F5;" |A variation of [[cerebellar hypoplasia]] | ||
|} | |} | ||
Latest revision as of 14:41, 8 August 2019
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Arnold-Chiari malformation Microchapters |
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Differentiating Arnold-Chiari malformation from other Diseases |
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Diagnosis |
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Arnold-Chiari malformation classification On the Web |
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American Roentgen Ray Society Images of Arnold-Chiari malformation classification |
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Risk calculators and risk factors for Arnold-Chiari malformation classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Fahimeh Shojaei, M.D.
Overview
Arnold chiari malformation may be classified according to herniation content into 4 subtypes. Type 1 has herniation of cerebellar tonsils. Type 2 has herniation of cerebellar tonsils and vermis. Type 3 has herniation of cerebellar tonsil and vermis and lower brain stem. Type 4 has cerebellar hypoplasia with brain stem in posterior fossa.
Classification
Arnold chiari malformation may be classified according to herniation content into 4 subtypes:[1]
| Subtypes | Explanation | Association |
|---|---|---|
| Type1 | Herniation parts: Cerebellar tonsils
|
Syringomyelia |
| Type 2 | Herniation parts: Cerebellar tonsils and vermis
|
Lumbosacral myelomeningocele |
| Type 3 | Herniation parts: Cerebellar tonsil and vermis, lower brain stem
|
Occipital encephalocele |
| Type 4 | Herniation parts: Brain stem located in posterior fossa, underdeveloped cerebellum
|
A variation of cerebellar hypoplasia |
References
- ↑ Cotes C, Bonfante E, Lazor J, Jadhav S, Caldas M, Swischuk L, Riascos R (June 2015). "Congenital basis of posterior fossa anomalies". Neuroradiol J. 28 (3): 238–53. doi:10.1177/1971400915576665. PMC 4757284. PMID 26246090.