7 doctors weighed in:
Is arnold chiari malformation type one a neural tube defect?
7 doctors weighed in

Dr. Adesh Tandon
Neurosurgery
6 doctors agree
In brief: 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.

In brief: 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.
Dr. Adesh Tandon
Dr. Adesh Tandon
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