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What is the difference between type 1 and type 2 Chiari malformations

A 37-year-old member asked:
Dr. Ramin AmirNovin
Neurosurgery 21 years experience
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
Dr. William Singer
Pediatric Neurology 51 years experience
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 20-year-old female asked:
Dr. Evelyn Hurvitz
Pediatrics 37 years experience
Headaches: The most common effect would be headaches. You may also experience dizziness or a sense of imbalance.
Dr. Kevin Teal
Neurosurgery 30 years experience
Shoulder area numb: The lack of CSF flow around the chiari area is thought to raise the risk for a fluid collection inside the cervical spine called a syrinx. This can ca... Read More
A 21-year-old member asked:
Dr. Lester Thompson
Pathology 33 years experience
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
Dr. William Goldie
Pediatric Neurology 48 years experience
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
Neurology 23 years experience
Same: No difference, in short form people call as chiari malformation.
A male asked:
Dr. Michael Gabor
Diagnostic Radiology 33 years experience
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
Neurosurgery 29 years experience
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
Pediatric Neurology 48 years experience
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
Neurosurgery 29 years experience
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
A 17-year-old female asked:
Dr. Alan Ali
Dr. Alan Alianswered
Psychiatry 32 years experience
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
Radiology 21 years experience
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

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