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Doctor insights on: Cerebellar Tonsil

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Does a 5.8 cerebellar tonsil herniation need surgery even if nothing else shows on mri. Used to be a herniation of 3.8 now its 5.8.?

Does a 5.8 cerebellar tonsil herniation need surgery even if nothing else shows on mri. Used to be a herniation of 3.8 now its 5.8.?

Discuss with doctor: These symptoms can only be adequately diagnosed only after a thorough evaluation by your doctor. This may include labs and other satudies. Once all of the information is in, your doctor can let you know what's going on, and what to do to help you. ...Read more

Cerebellum (Definition)

An area in the back of the brain that helps coordinate movement, speech, and eye movements. It has connections to the frontal lobes also and may play a role in helping you ...Read more


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What do my mri results mean; chronic microvas ischemic changes noted, frontal bone lesion & slightly abnormally shaped & low lying cerebellar tonsil.

What do my mri results mean; chronic microvas ischemic changes noted, frontal bone lesion & slightly abnormally shaped & low lying cerebellar tonsil.

Hard to say: Urs best to discuss this with a neurology doctor, who can get full history. Picture by itself is just a picture-need medical hx and exam. So far it may look that there are changes- probably due to long history of smoking or other vascular disease. ... As far as the shape of the brain parts and frontal lesion- it's impossible to tell without more info ...Read more

Dr. Alan Ali Dr. Ali
1 doctor agreed:
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What are low lying cerebellar tonsils?

Dr. Alan Ali Dr. Ali
1 doctor agreed:
What are low lying cerebellar tonsils?

Tonsillar Herniation: It is result of brain herniation from increased pressure in brain which pushes the cerebellar tonsils down through the foramen magnum (opening in floor of skull where cerebellum comes through when pushed down). It is also called Chiari Malformation. ...Read more

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Can low lying cerebellar tonsils descend further?

Can low lying cerebellar tonsils descend further?

Yes: This can be progressive, especially if caused by a spinal problem like a tethered spinal cord or spinal fluid leak. Many times this does not progress however. ...Read more

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Slightly low lying cerebellar tonsils, probably secondary to tonsilar ectopia?

Slightly low lying cerebellar tonsils, probably secondary to tonsilar ectopia?

Not tonsils: The cerebellar tonsils are not tonsils, just part of your cerebellum. Sometimes when patients are dizzy it is due to pressure from a portion of the cerebellum resting low in the skull, around the foramen magnum. If a radiologist noted the cerebellar tonsils ride a little low, they might mention it in a report. It would not be that uncommon of a finding on a normal MRI or ct of the brain. ...Read more

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What exactly does cerebellar tonsils pass up to 5mm inferior to foramen magnum mean?

See a neurosurgeon: This can be a signficant problem related to a brain or brainstem problem. If untreated, can cause serious harm.

Seek medical attention from your doctor. ...Read more

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What is pencilling of cerebellar tonsils in a chiari malformation?

Herniation.: The middle part of the cerebellum herniates through the foramen magnum (at the top of the spinal canal) in chiari ii malformation, causing a particular configuration of the cerebellar tonsils. ...Read more

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What is pencilling of cerebellar tonsils in chiari malformation? What causes it?

Chiari malformation: A Chiari malformation is a situation where the cerebellar tonsils, two small structures at the base of the brain or forced through the hole at the base of the skull called the foramen magnum. The tonsils can developed a beak-like appearance or a "pencilling" due to the narrowed appearance on MR. ...Read more

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Can any doc tell me what does low lying cerebellar tonsils mean?

Can any doc tell me what does low lying cerebellar tonsils mean?

Arnold Chiari: Low lying cerebellar tonsils refer to the presence of cerebellar tissue below the foramen magnum. Usually referred to as Arnold Chiari Type I, which are in general asymptomatic and seen as an incidental finding on MRI of the brain. Best to check with your doctor for certain. ...Read more

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Borderline inferior cerebellar ectopia present, the cerebellar tonsils demonstrate mild inferior herniation, measuring 4 mm sagittal sequence, means?

Borderline inferior cerebellar ectopia present, the cerebellar tonsils demonstrate mild inferior herniation, measuring 4 mm sagittal sequence, means?

It most likely: Doesn't mean anything. If that is the only finding, and the tonsils are otherwise normally shaped, some use less than 5mm as the normal range, so by that criteria 4mm would be normal. Others call 3-5mm benign tonsillar ectopia, an incidental asymptomatic finding. Most consider greater than 5mm to be abnormal (Chiari 1 malformation). The measurement is from the skull base to the tonsil tip. ...Read more

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Mri report read mild ectopic of cerebellar tonsils...What's the meaning?

Mri report read mild ectopic of cerebellar tonsils...What's the meaning?

Incidental finding: The cerebellar tonsils project inferiorly from the cerebellum. If they extend below the foramen magnum (large skull base opening) lees than 5 mm, they are ectopic. If they extend more than 5 mm below, chiari I malformation must be considered clinically. Cerebellat. ...Read more

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Mri stated "there are some what low lying cerebellar tonsils along the inferior margin of the foreman magnum, no tonsil ectopia." Should I be worried?

No need to worry: What you are describing sounds like a normal variant. No tonsil ectopia means that there is no damage to the cerebellum. However, I would discuss this with the ordering physician ...Read more

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What does mildly low-lying cerebellar tonsils mean? What does unremarkable unenhanced brain parenchyma mean?

It depends: Everyone's brain "sags" onto the skull base when standing, running, defecating. Any sag more than 5mm may suggest chiari malformation or low pressure headache. Have your doctor ask the radiologist to measure the mm of descent for you, the rest of the report is normal. ...Read more

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If my cerebellar tonsils extend 4 to 5 mm below the foramem magnum and my CSF flow is normal, do I have Chiari or benign cerebellar ectopia?

If my cerebellar tonsils extend 4 to 5 mm below the foramem magnum and my CSF flow is normal, do I have Chiari or benign cerebellar ectopia?

Ectopia: Probably ectopia. Tonsils usually greater than 5mm below magnum for chiari. However would make sure your images were read by a neuroradiologist. Morphology/shape of the tonsils also important. Have seen borderline/mild cases missed.
I suggest caution, there are other reasons why tonsils could be low such as CSF leak etc. ...Read more

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FOR MY MOM INFERIOR CEREBELLAR TONSILLAR ECTOPIA 1.2CM BELOW FORAMEN MAGNUM. THERE IS A ASYMETRIC HERNIATION OF CEREBELLAR TONSILS RIGHT-1.2CM LEFT-8MM?

FOR MY MOM INFERIOR CEREBELLAR TONSILLAR ECTOPIA 1.2CM BELOW FORAMEN MAGNUM. THERE IS A ASYMETRIC HERNIATION OF CEREBELLAR TONSILS RIGHT-1.2CM LEFT-8MM?

Chiari malformation: Arnold chiari malformation type 1 is defined by cerebellar tonsils that extend below the foramen magnum. The symptoms range from none to headaches, numbness, pain and weakness. The condition can become life threatening when cerebrospinal fluid is blocked. It is important to see a neurosurgeon with experience treating this disorder to discuss the therapeutic options. ...Read more

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Had a MRI of the braincan you tell me what it mean by the cerebellar tonsils are seen to extend 2mm caudal to the foramen magnum, compatible with mild?

Had a MRI of the braincan you tell me what it mean by the cerebellar tonsils are seen to extend 2mm caudal to the foramen magnum, compatible with mild?

Location, location!: Cerebellar tonsils (not to be confused with lingual tonsils in the throat) are at the lower end of the cerebellum and are close to the rim of the opening at the base of skull (foramen magnum = big hole). If the f.M. Isn't big enough & tonsils protrude thru it, not enough space for brainstem may be present, causing compressive symptoms. Also CSF (spinal fluid) may not drain properly-->headaches etc. ...Read more

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4th vent. Tumor 2cm in size. My cerebellar tonsils descended 4mm. Would tumor account for descended tonsils? Is Chiari diagnosis immaterial due to tumor dx?

2 issues: Trust you are in contact with an experienced neurosurgeon. Surgery of Chiari issues is a very sub specialized area. The tumor is unlikely to be responsible for the "descended tonsils", but needs careful management. Problems such as yours may be associated with connective tissue disorders. Has that been considered? ...Read more

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My MRIs yesterday showed cerebellar tonsils hanging down 5 mm. I had the MRIs because I've been having right facial numbness, usually upon standing after sitting for at least 30 minutes. My follow up with the neurologist is not until July 2nd. I'm very ner

My MRIs yesterday showed cerebellar tonsils hanging down 5 mm. I had the MRIs because I've been having right facial numbness, usually upon standing after sitting for at least 30 minutes. My follow up with the neurologist is not until July 2nd. I'm very ner

Mild Chiari: Chances are, you have had this for your entire lifetime, and not likely that this is causing any symptoms. However, agree with neurological consultation, and your new doctor can help pinpoint what is occurring. ...Read more

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Does "somewhat low lying cerebellar tonsils" necessarily mean chiari? Mri states there is no evidence of tonsillitis ectopia.

Does "somewhat low lying cerebellar tonsils" necessarily mean chiari? Mri states there is no evidence of tonsillitis ectopia.

Not Chiari: In Chiari malformation, a small part of the cerebellum protrudes through the bottom opening of the skull called the foramen magnum into the cervical spine where the spinal cord starts. This can cause neurological symptoms including headache. Based upon your description the radiologist thinks the position of the tonsils are not bad enough to call it a Chiari, also called "ectopic tonsils." ...Read more

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Flow-voids in the major vessels in the base of the brain appear grossly patent. Low cerebellar tonsils about 5 mm below the foramag?

Flow-voids in the major vessels in the base of the brain appear grossly patent. Low cerebellar tonsils about 5 mm below the foramag?

Not Abnormal: Cerebellar tonsils at 5 mm below foramen magnum is a normal variant and would not be expected to have clinical significance. Flow voids mean that blood is indeed flowing in your vessels, a good thing. ...Read more

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What does it mean when my MRI results say that my cerebellar tonsils are seen low lying 4.2mm below, suggesting chiari malformation?

Chiari malformation: What you're describing is a typical finding for a chiari type 1 malformation. Chiari malformation is basically when part of the brain (cerebellum) sits below the base of the skull. This may cause headaches, weakness, trouble swallowing/speaking, numbness of the arms....Many different symptoms are possible. It also can be asymptomatic. Get a neurological or neurosurgical evaluation. ...Read more

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Does "some what low lying cerebellar tonsils" necessarily mean chiari malformation? That was the impression on my mri. Should I be worried?

Not really: Unless the cerebral tonsils are below the foramen magnum and you have clinical signs of hydrocephalus or enlargement of the ventricles in your brain, you don't have any worries. ...Read more

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I'm having pain at the base of my skull. Not like a headache but like bone pain. What could this be? MRI states low lying cerebellar tonsils.

What U describe is a: -Chiari malformation. Severe cases, the cerebellar tonsils R protruding far below the foramen magnum & produces spastic findings in the extremities. Low lying may in Ur case B an incidental finding, and not the real cause of Ur neck pain. B sure to C a neurosurgeon, */or a neurologist. ...Read more

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Is it possible to have "slightly low lying cerebellar tonsils" without it being chiari malformation? That was a finding on MRI but doc says no chiari

Is it possible to have "slightly low lying cerebellar tonsils" without it being chiari malformation? That was a finding on MRI but doc says no chiari

Yes,: I suppose so. Chiari malformations have specific findings. "Slightly low lying cerebellar tonsils" is a somewhat nebulous, nonspecific subjective description. It probably means that the tonsillar tip is below the foramen magnum but within the range of normal variation, but if you are concerned, talk to your doc about it. ...Read more

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My sons brain MRI shows ectopia cerebellar tonsils could that be causing his focal onset seizure with slowing..

My sons brain MRI shows ectopia cerebellar tonsils could that be causing his focal onset seizure with slowing..

Ask Neurosurgeons: I am assuming this is a condition called Chiari malformation, which is something one is born with, however there may be neurosurgical procedures to relieve the frequency of this problem. I suggest you have the case referred to a pediatric-oriented Neurosurgeon and neurologist for options, there MAY be a treatment that can improve this clinically, call Health Tap for concierge help if it is desired ...Read more

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Mri report says, MRI signs arachnoids cyst middle cranial fossa on the right. Ectopia of the cerebellar tonsils in a big hole for tylochneo. Remedy?

Arachnoid cyst: Arachnoid cysts in the middle fossa are rather common and rarely need treatment. Ectopia of the cerebellar tonsils are also not uncommon and again rarely need treatment. ...Read more

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Pls comment regarding ventricles (dysmorphic?)and cerebellar tonsils (borderline Chiari?).Frontal lobe atrophy? MRI images in profile.

Pls comment regarding ventricles (dysmorphic?)and cerebellar tonsils (borderline Chiari?).Frontal lobe atrophy? MRI images in profile.

Try CONCIERGE: HealthTap CONCIERGE doctors see and treat you via smartphone, tablet, or laptop. Certain medications (not all) can be prescribed. They can see photos you upload into your Files folder. You can also send images while in the middle of a live CONCIERGE consultation. (Doctors answering HealthTap BASIC, free questions are providing information only, and do not see patients' images or photos.) ...Read more

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What does it mean? My report says the report says there is mild cerebellar tonsillar ectopia with tonsils extending 5mm through the foramen magnum

Chiari Malformation: Well at least one of the features is present. Low lying cerebellar tonsils are dipping into the foramen magnum which is the big hole at the base of the skull that allows the spinal cord to pass up to the brain. It means no more trampolines, bungee cord jumping or roller coaster rides for you. You don't want the cerebellar tonsils to be forced down further. Look up arnold chiari malformation, . ...Read more

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After a successful chiari malformation surgery, can the cerebellum tonsils re slip?

Chairi malformation: Yes. Scar tissue can compress the cerebellar tonsils and lead to recurrent symptoms. However this is uncommon and more likely is that you have arthritis in your neck that is mimicking the symptoms of a Chiari malformation. A complete neurological examination and an MRI of the cervical spine will provide some answers for you. ...Read more