Are tonsils the same as cerebellar tonsils?

Are tonsils the same as cerebellar tonsils?

Low-Lying Tonsils: Low-Lying Tonsils lay slightly below the base of the skull, less than approximately 5mm. In Low-Lying Tonsils, the cerebellar tonsils have a slight downward descent through the foramen magnum.

What causes cerebellar tonsillar herniation?

A tonsillar herniation is indicative of an underlying pathology that may include trauma, hemorrhage, tumor, or hydrocephalus. Therefore, treatment is directed at the underlying pathology.

What is the function of the cerebellar vermis?

The cerebellar vermis is involved in cardiovascular regulation during movement and posture changes. Eyeblink conditioning experiments demonstrated that the cerebellar vermis is also involved in conditioned bradycardia in rabbits.

What is Folia in cerebellum?

Folium means leaflike structure, especially one of the leaflike subdivisions of the cerebellar cortex.

What does it mean if you have low lying cerebellar tonsils?

Low-lying tonsils, sometimes also called benign tonsillar ectopia, is a subtype of cerebellar tonsillar ectopia denoting asymptomatic and only slight downward descent of the cerebellar tonsils through the foramen magnum and is distinct from Chiari I malformations.

Can cerebellar tonsils cause headaches?

Herniation of the cerebellar tonsils through the foramen magnum is a well-described cause of headache. These are typically impulse headaches, precipitated by coughing or straining. They are usually occipital in location. There may be associated ataxia, and motor and sensory deficits.

What is a cerebellar vermis?

The vermis is the unpaired, median portion of the cerebellum that connects the two hemispheres. Both the vermis and the hemispheres are composed of lobules formed by groups of folia. There are nine lobules of the vermis: lingula, central lobule, culmen, clivus, folium of the vermis, tuber, pyramid, uvula and nodule.

What is cerebellar vermis atrophy?

Cerebellar atrophy with seizures and variable developmental delay (CASVDD) is an autosomal recessive neurologic disorder characterized by cerebellar ataxia associated with atrophy of the cerebellar vermis on brain imaging.

Is low lying cerebellar tonsils the same as Chiari malformation?

Chiari I malformation describes low-lying cerebellar tonsils without other congenital brain malformations. Chiari II malformation is a complex anomaly with skull, dura, brain, spine and spinal cord manifestations, which usually presents in early childhood or in infancy.