A member asked:

Hello, i did a brain mri today and got this: incidental low-lying cerebellar tonsils extending approximately 4-5 mm inferior to the foramen magnum bilaterally. does it means i have arnold chiari malformation? what is the treatment for it?

3 doctors weighed in across 2 answers

Yes, like about 1/100 people. In the absence of any related symptoms, the management is usually limited to monitoring over time. If there are symptoms, other options are available.

Answered 3/27/2023

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If this is clinically asymptomatic and not causing demonstrable objective abnormalities, there is no indicated necessary intervention. Observation over time should suffice.

Answered 3/31/2023

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