chiari 1 always produce obstruction of the lcr at the magnum cistern?...

Cerebellar tonsillar descent is found in about 1% of health people. Whether or not this amounts to a Chiari malformation hangs in principle upon how far the tonsils descend; in practice however the key matter is obstruction of the foramen magnum, not the distance the tonsils descend. Normally, asymptomatic Chiari or tonsillar descent is best left alone; of MRI of the cervical cord shows a syrinx then surgery may be considered. Should such asymptomatic patients have follow up MRI? Probably not in mist cases.

Related questions

Other questions answered by Doctoralia's experts:

Do you have a question about Hydrocephalus?

Our experts answered the following question about Hydrocephalus:

Ask thousands of Doctoralia experts anonymously and for free

  • Your question will be published anonymously
  • Make it one, clear, medical question
  • Be brief
  • This service doesn´t replace a consultation with a medical professional. If you have a problem or emergency, go to a doctor or an emergency room.
  • Questions about a specific case or second opinion requests will not be allowed.
In order to improve our service we are using our own and third-party cookies. By continuing to use this site, you agree to our cookie policy. More info X