You may hear this type also called Arnold-Chiari malformation. In this type, both your cerebellum and brain stem push against your foramen magnum.

It’s also known as Arnold-Chiari malformation, hindbrain herniation, and tonsillar ectopia. Read on to learn more about this condition, from types and causes to outlook and prevention.

Chiari malformation, an anomaly of the posterior cranial fossa, also known as Arnold–Chiari malformation, was described in autopsies by Hans Chiari, an Austrian pathologist, in 1891.

CMs are classified by the severity of the disorder and the parts of the brain that protrude into the spinal canal. Type I involves the extension of the cerebellar tonsils (the lower part of the ...

Arnold-Chiari malformation is a condition in which the cerebellum portion of the brain protrudes down into the spinal canal. It may be congenital, associated with other anomalies including ...

In Arnold Chiari malformation type I, abnormal cerebrospinal fluid flow occurs and frequently results in syringomyelia. 1, 2 Various surgical methods for treating neurologically symptomatic cases ...

There's not cure for Arnold-Chiari malformation, which causes Thomas severe pain, and treatment isn't cheap. He underwent a brain decompression surgery last year, which involved a procedure ...

The 17-year-old was diagnosed with Arnold Chiari Malformation, known simply as Chiari (pronounced kee-AR-ee) Malformation, which essentially is when the cerebellum slips or is pushed into a ...

Chiari malformations affect females more often than males. Scientists once believed that Chiari malformations occurred in only 1 in every 1,000 births. But the increased use of diagnostic imaging ...