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A member asked:
What is the difference between mild cerebellar tonsillar ectopia and chiari malformation 1. are there other treatments beyond surgery?
A doctor has provided 1 answer
Both situations: imply that the cerebellar tonsils protrude beyond the foramen magnum. Mild ectopia generally means that the tonsils do not protrude far enough to meet the distance criteria of Chiari 1, and are normally shaped and without other findings seen in Chiari 1. The vast majority of "mild ectopias" are normal anatomic variations and cause no symptoms.
Answered 9/3/2020
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