2024年8月28日 · Tonsillar herniation is a type of brain herniation characterized by the inferior descent of the cerebellar tonsils below the foramen magnum 5. Clinically, the presence of tonsillar herniation is often called coning .

2023年8月23日 · Tonsillar herniation is the movement of brain tissue from one intracranial compartment to another, specifically the movement of the cerebellar tonsils through the foramen magnum. This is a life-threatening and time-critical pathology that may be reversible with emergent surgical intervention and medical management.

In tonsillar herniation, also called downward cerebellar herniation, [7] transforaminal herniation, or "coning", the cerebellar tonsils move downward through the foramen magnum possibly causing compression of the lower brainstem and upper cervical spinal cord as they pass through the foramen magnum. [8]

2023年8月13日 · Central involves herniation of both temporal lobes through the tentorial notch. A tonsillar herniation is caused by an infratentorial mass, forcing the cerebellar tonsils through the foramen magnum. Upward herniation occurs when an …

Tonsillar herniation: Usually, the cause is an expanding infratentorial mass (eg, cerebellar hemorrhage), forcing the cerebellar tonsils, through the foramen magnum. The medial temporal lobe is squeezed by a unilateral mass across and under the …

2023年5月23日 · The cerebellar tonsils move downward through the foramen magnum, a natural opening at the base of the skull where the spinal cord connects to the brain. A brain herniation can also occur...

2023年12月13日 · Tonsillar herniation, also known as tonsillar ectopia, is a condition where the cerebellar tonsils push through the foramen magnum, causing compression of the spinal cord. Learn about its causes, symptoms, diagnosis, and treatment options to better understand this neurological condition.

2023年7月24日 · The foramen magnum functions as a passage of the central nervous system through the skull connecting the brain with the spinal cord. On either side of the foramen magnum is an occipital condyle. These condyles form joints with the first cervical vertebra.

Tonsillar herniation: A mass (tumor or bleeding) in the lower part of the brain pushes the lowest part of the cerebellum (cerebellar tonsils) through the opening at the base of the skull (foramen magnum). As a result, the brain stem, which controls breathing, heart rate, and blood pressure, is compressed and malfunctions.

2023年8月23日 · A tonsillar herniation is characterized by the descent of the cerebellar tonsils through the foramen magnum, which compresses the medulla against the clivus/odontoid process. It is described as "coning" as the brain tissue is squeezed down through the foramen like being squeezed into a cone.