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what is the difference between type 1 and type chiari malformations

A 37-year-old member asked:
Dr. Ramin AmirNovin
21 years experience Neurosurgery
Several things: Type 1 chiari is usually found in later life and the cerebellar tonsils descend below the skull. Type 2 is usually found early on in life and associa ... Read More
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Dr. William Singer
51 years experience Pediatric Neurology
Chiari malformations: Type i is associated with a portion of the cerebellum called the tonsils, downwardly displaced through the foramen magnum at the base of the skull. M ... Read More

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A 21-year-old member asked:
Dr. Lester Thompson
33 years experience Pathology
Extent of herniation: It is the downward displacement of the cerebellum, specifically a region called the "tonsils", through the foramen magnum. There are actually 4 types. ... Read More
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Dr. William Goldie
48 years experience Pediatric Neurology
Huge difference: Chiari i is just low lying cerebellum tonsils which is usually incidental and not relevant. Chiari ii is a complex found in patients with spina bifid ... Read More
A 35-year-old member asked:
Dr. Nalinaksha Joshi
23 years experience Neurology
Same: No difference, in short form people call as chiari malformation.
Dr. William Goldie
48 years experience Pediatric Neurology
Clinical findings: Chiari described different forms of malformation of the cerebellum. His type 2 was found associated with spina bifida and other defects in formation ... Read More
Dr. Estrada Bernard
38 years experience Neurosurgery
Big difference: Arnold chiari is a chiari ii malformation which is usually associated with spina bifida and involves herniation of the cerebellar vermis. On the othe ... Read More
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A male asked:
Dr. Michael Gabor
33 years experience Diagnostic Radiology
Both situations: imply that the cerebellar tonsils protrude beyond the foramen magnum. Mild ectopia generally means that the tonsils do not protrude far enough to mee ... Read More
A 36-year-old member asked:
Dr. Roger Frankel
29 years experience Neurosurgery
Different: Arnold chiari malformation describes low lying cerebellar tonsils, and sometimes other posterior fossa abnormalities. Chiari syndrome can refer to the ... Read More
A 38-year-old member asked:
Dr. William Goldie
48 years experience Pediatric Neurology
MRI: Chiari is a malformation of the cerebellum and brainstem that is well defined by mri. There are at least three types depending on the appearance of t ... Read More
A 40-year-old member asked:
Dr. Roger Frankel
29 years experience Neurosurgery
Brain abnormality : This is an abnormality that is usually congenital. The back lowest compartment in the skull is slightly inadequate in size to contain the brain. The b ... Read More
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12 thanks
A 17-year-old female asked:
Dr. Alan Ali
Dr. Alan Ali answered
32 years experience Psychiatry
Arnold Chiari: It is a term used by radiologists to denote herniation of the brain through the foramen magnum at bottom of skull.
A 35-year-old member asked:
Dr. Shari Jackson
21 years experience Radiology
Probably not: Technically, most chiari i malformations occur during fetal development. Many people who have a mild chiari i malformation may never have any symptom ... Read More
A 33-year-old member asked:
Dr. Gerald Mandell
52 years experience Nuclear Medicine
Can be symptomatic: Chiari malformation type i is neurological disorder where cerebellum (or more specifically the cerebellar tonsils), descends out of the skull into the ... Read More

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