Question 1

what's the arnold chiari malformation?

Accepted Answer

Small back of skull.: Chiari malformations develop due to a decreased size in the back of the skull. Because there is not enough space for the brain to develop, a part of the brain called the cerebellar tonsils get pushed through through the hole where the spinal cord attaches to the brain. This results in increased pressure and development of "cysts" in the spinal cord. Chiari ii has additional brain&cord changes.

Question 2

what causes arnold chiari malformation?

Accepted Answer

No one knows: Chiari described malformations of the cerebellum.  Arnold added the defects in the brain associated with spina bifida.  This became known as chiari type 2 or arnold chiari.  There is kinking of the medulla and fourth ventricle, obstruction of the outlet of the fourth ventricle, peaking of brainstem, fusion of thalamus, as well as hydrocephalus and incomplete closure of spinal cord.

Question 3

what is arnold chiari malformation type one?

Accepted Answer

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 back bottom part of the cerebellum called the cerebellar tonsils protrude through the skull opening that the spinal cord passes through. This can cause pressure on the brainstem and spinal cord which can cause symptoms.

Question 4

anyone operated on arnold chiari malformation?

Accepted Answer

Many times: Chiari type two is arnold chiari.  It is associated with spina bifida, hydrocephalus, syrinx, and apnea.  Aggressive surgical management is often necessary at birth and during early infancy.  The anomaly can not be cured.  Release of pressure is the only treatment.

Question 5

what are the tests for arnold-chiari malformation?

Accepted Answer

Head/ Cervical MRI: Chiari malformation is best diagnosed with a head MRI without contrast  to assess for the abnormal tonsil position and determine whether hydrocephalus, or water on the brain, is present also.  A cervical MRI without contrast can assess for a problem called a syrinx, or a fluid cavity in the center of the spinal cord. A lumbar MRI without contrast can also exclude a tethered cord causing numb legs.

Question 6

what are the symptoms of arnold-chiari malformation?

Accepted Answer

Headaches/dizziness: Most common symptom is headache. Other symptoms can include dizziness, unsteady gait, double vision, and passing out episodes. The headaches can be worse if there is straining.

Question 7

what sort of problem is an arnold-chiari malformation?

Accepted Answer

Brain malformation: Briana, a chiari malformation is a downward congenital (from birth) displacement of the lowermost part of the a part of the brain (the cerebellum) through the opening in the  base of the skull. Several types with no symptoms to multiple symptoms such as neck pain, headaches, dizziness, loss of balance, numbness of limbs. May be associated with other structural changes in the spinal cord or brain.

Question 8

what are possible causes of arnold-chiari malformation?

Accepted Answer

Acquired or congenit: There are both acquired and congenital forms of Chiari. In a 43 yo, it is likely acquired. The acquired form, almost always a Chiari I, may be caused by increased pressure in the head, or more likely the cause will be unknown. Chiari II is always a congenital condition and is much more severe than Chiari I (in general). Read more here: http://surgeonwriter.com/chiarimonograph/

Question 9

what is the difference between arnold chiari malformation and chiari malformation?

Accepted Answer

Same: No difference, in short form people call as chiari malformation.

Question 10

what are the major presenting symptoms that accompany an arnold-chiari malformation?

Accepted Answer

Multiple: They include headaches, fatigue, muscle weakness in the head and face, difficulty swallowing, dizziness, nausea, impaired coordination, and, in severe cases, paralysis.

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