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Doctor insights on: Chiari 1 Malformation Prognosis

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

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

Prognosis (Definition)

The prognosis is the predicted outcome or "forecast" for a disease or process. It is only an estimate but is likely based on past experience or data taking into account the individual's overall health status. It may suggest progression of disease ...Read more


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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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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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Would a chiari malformation show up on a brain mri?had 3 Mris in the past 2 yrs and they haven't seen one but lots of pain and pressure nape of neck

Would a chiari malformation show up on a brain mri?had 3 Mris in the past 2 yrs and they haven't seen one but lots of pain and pressure nape of neck

Evaluate neck: Do NOT understand repetitive focus on Chiari malformation, even with history of connective tissue disorder. However, appears you do NOT have it. See a good osteopathic or rehab doctor, and uncover pain generator in neck, and treat underlying problem. Many co-morbidities can be associated with Ehlers-Danlos. ...Read more

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Does a standard brain CT or MRI go down far enough to be able to see a chiari malformation if there was one?

Does a standard brain CT or MRI go down far enough to be able to see a chiari malformation if there was one?

Yes: Both scans routinely include the skull base and foramen magnum in order to diagnose a chiari malformation. An MRI is the better study to evaluate this possibilty. ...Read more

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