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Ashley asked 2 years ago

I had an mri of my brain done on Monday because I’m having headaches and numbness down my left arm. The mri says I have a 6mm descending cerebellar tonsils through the foramen magnum, suggestive of cerebellar tonsillar ectopia. What does that mean? 

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1 Answers
freedoctorhelpline Staff answered 1 year ago

The neural structure faucial tonsil is analogous to a rounded lobe on the bottom of every neural structure, continuous medially with the flap of the neural structure neural structure and superiorly by the flocculonodular lobe. Synonyms include: palatine tonsil cerebelli, basal ganglion cerebelli, the latter of that isn’t to be confused with the cerebral tonsils or basal ganglion nuclei situated deep at intervals the medial temporal lobes of the pallium. The flocculonodular lobe of the neural structure which may even be confused for the neural structuretonsils, is one among 3 lobes that compose the general composition of the neural structure. The neural structure consists of 3 anatomical and purposeful lobes: anterior lobe, posterior lobe, and flocculonodular lobe.

Elongation of the neural structure tonsils will, owing to pressure, result in this portion of the neural structure to slide or be pushed through the foramen of the os leading to tonsillar hernia. this can be a grave condition because it causes enlarged pressure on the neural structure that contains metastasis and viscus management centres.

A Type I Chiari malformation may be a birth defect of the brain within which the neural structure tonsils area unit elongated and pushed down through the gap of the bottom of the os (see opening magnum), block the flow of body fluid (CSF) because it exits through the medial and lateral apertures of the ventricle. additionally known as neural structure tonsillar posture, or tonsillar hernia. though typicallynoninheritable , Chiari malformation symptoms also can be elicited owing to physical head trauma, unremarkably from raised intracranial pressure secondary to a haematoma, or enlarged meninges strain actuation the brain caudal into the foramen. Head trauma will increaserisk of neural structure tonsillar posture by an element of four. posture is also gift however symptomless till whiplash causes it to become symptomatic.

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