e/Basilar invagination

Information
has gloss	eng: Basilar invagination occurs when the top of the C2 vertebrae migrates upward. It can cause the opening in the skull where the spinal cord passes through to the brain (the foramen magnum) to narrow. It also may press on the lower brainstem.
lexicalization	eng: Basilar invagination
instance of	e/Neurological disorders