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Doctor insights on: What Is Chiari 1 Malformation

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What is arnold chiari malformation type one?

What is arnold chiari malformation type one?

Mild malformation: AC type 1 involves low lying cerebellar tonsils. at the level of the foramen magnum. Usually asymptomatic and picked up as an incidental finding on work up for another condition. ...Read more

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What is chiari malformation type 1?

What is chiari malformation type 1?

A brain anamoly: A chiari 1 is a malformation where a small part of the brain (the cerebellar tonsils) descends into the spinal canal and compresses the spinal cord/brain stem. The early symptom are typically headaches. As time proceeds and in more severe descended chiari's, the symptoms can include numbness, weakness, unsteadiness, visual issues, nausea, etc. See physician for an exam and discussion of surgery. ...Read more

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Hi doctors, was just wondering what is a type 1 chiari malformation?

Hi doctors, was just wondering what is a type 1 chiari malformation?

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 spinal area, resulting in compression of parts of brain and spinal cord, and disrupts normal flow of cerebrospinal fluid.Type ii involves extension of both cerebellar and brain stem tissue into the foramen magnum. Associated with myelomeningocele. ...Read more

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What to do if I have been diagnosed with a 5mm chiari one malformation - is this thing serious?

Chiari malformation: A 5mm herniation in a chiari is borderline from a radiological point of view, what is more important is are you have symptoms from the chiari that would it more likely you would need surgery. A consultation with a neurosurgeon would likely be the best option if you want to find out more. ...Read more

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I have Chiari malformation type one, do you know what it is?

I have Chiari malformation type one, do you know what it is?

Arnold Chiari: It is a term used by radiologists to denote herniation of the brain through the foramen magnum at bottom of skull. ...Read more

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Can a chiari malformation type one be picked up in an amniocentesis test?

Can a chiari malformation type one be picked up in an amniocentesis test?

No: Chiari malformation is associated with many conditions, some of which have abnormal chromosomes that would show up by amniocentesis. The malformation itself can be seen by fetal ultrasound but not usually at 16-18 weeks when visualization of fetal anomalies might prompt recommendation for amniocentesis. ...Read more

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I have chiari malformation and one of my pupils is slightly larger than the other. Is that a typical symptom?

No: This is not a typical symptom of chiari malformation. It is normal to have one pupil very slightly larger than the other. This is called physiologic anisocoria. ...Read more

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Is arnold chiari malformation type one a neural tube defect?

No: The more accepted term is chiari malformation as arnold-chiari is an older term. This type of malformation is not a neural tube defect, but rather an abnormal migration of the cerebellar tonsils below the level of the foramen magnum (chiari type 1). This defect is attributed to a congenitally small posterior fossa, thus allowing the cerebellar tonsils to migrate downward. ...Read more

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I have an arachnoid cyst and a chiari 1 malformation. How will a neurosurgeon know which one is causing my tinitus, dizziness, and nausea?

I have an arachnoid cyst and a chiari 1 malformation.  How will a neurosurgeon know which one is causing my tinitus, dizziness, and nausea?

Cyst Location: Unless the arachnoid cyst is in the area called your posterior fossa , the back of your skull area, the dizziness would more likely be related to a chiari. The tinnitus should be assessed by ENT with hearing test. The nausea if it is exertional may be a sign of vertigo or due to the chiari if associated with a headache. I agree you need some workup to tease things out. ...Read more

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