What is subcerebellar tonsillar herniation spinal cord cavernous?

Inferior cerebellar tonsil herniation spinal cord cavernous disease is a congenital developmental abnormality.
When the inferior cerebellar tonsil hernia reaches a certain position, it will affect the circulation of cerebrospinal fluid in the circum-occipital region, resulting in cerebrospinal fluid circulation disorders, and its downward force will continue to impact the central canal of the spinal cord, resulting in localized dilatation of the central canal of the spinal cord, which will cause some corresponding neurological symptoms, and then lead to spinal cavernous disease.
Subcerebellar tonsillar herniation is a relatively common neurosurgical condition. Mild subcerebellar tonsillar hernia can be asymptomatic, but can also manifest as hoarseness, dysphagia, neck pain, limited movement, limb movement disorders, sensory disorders, unsteady walking, nystagmus, if combined with spinal cord cavernous, often combined with sensory detachment, muscle atrophy of the upper limbs, and so on.
Symptoms can be effectively relieved by timely treatment at an early stage through posterior cranial fossa decompression surgery.