Chiari malformations (CMs) are structural defects in the cerebellum, the part of the brain that controls balance.
Normally the cerebellum and parts of the brain stem sit in an indented space at the lower rear of the skull, above the foramen magnum (a funnel-like opening to the spinal canal). When part of the cerebellum is located below the foramen magnum, it is called a Chiari malformation.
CMs may develop when the bony space is smaller than normal, causing the cerebellum and brain stem to be pushed downward into the foramen magnum and into the upper spinal canal. The resulting pressure on the cerebellum and brain stem may affect functions controlled by these areas and block the flow of cerebrospinal fluid (CSF) — the clear liquid that surrounds and cushions the brain and spinal cord — to and from the brain.
Read more articles on Chiari Malformation
The causes behind Chiari malformation type I is the excessively small or deformed size of the brain. This creates pressure and crowds the brain.read more
A condition in which the brain tissue extends to the spinal cord is known as chiari malformation. It is a rare condition.read more