What is the Arnold Chiari malformation

The Arnold-Chiari malformation is a developmental anomaly in which the brainstem and cerebellum are displaced caudally into the spinal canal. In Type 1 Arnold-Chiari malformation, the cerebellar tonsils are displaced into the cervical spinal canal. This malformation is associated with other cervical anomalies including basilar impression and Klippel-Feil syndrome. Dense scarring at the level of the foramen magnum may lead to hydromyelia or syringomyelia. Type 2 Arnold-Chiari malformation is a more complex anomaly and is usually associated with myelomeningocele. Cerebellar displacement is accompanied by elongation of the fourth ventricle, as well as displacement of the fourth ventricle and cervical nerve roots.

How To Reduce Acne Scarring

How To Reduce Acne Scarring

Acne is a name that is famous in its own right, but for all of the wrong reasons. Most teenagers know, and dread, the very word, as it so prevalently wrecks havoc on their faces throughout their adolescent years.

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