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A 20-year-old female asked:

had a mri and found arachnoid cyst-left front of brain and chiari 1 mailformation. should i be worried for my life?

2 doctor answers8 doctors weighed in
Dr. Peter Kurzweil
Internal Medicine 50 years experience
Puzzled: I don't know why this suddenly ended for the third time. Once again, if surgery is recommended, surgeon must be very clear to you and close family regarding the potential benefits, potential risks of the procedure, and potential risks of not doing the procedure. In very important decisions like this, would get 2nd opinion from md who specializes in this. Then, you must ultimately make a decision.
Dr. Jennifer Berkeley
Neurology 18 years experience
Not life threatening: Most arachnoid cysts and chiari 1 malformations are incidental findings on mris when patients are being worked up for headaches or other symptoms. A chiari 1 is when the cerebellar tonsils at the base of the brain lie low and slip through the hole at the base of the skull. Symptoms can include headache, numbness or ataxia (unsteadiness). Most chiari 1s do not need to be treated.
Dr. Edward Smith
Neurosurgery 54 years experience
Sases of mild Chiari 1 have been noted to spontaneously regress and others to worsen especially after head-neck injuries. Most of the time Chiari 1 doesn't change but headaches can worsen in later life. Most arachnoid cysts do not enlarge--but a few do. Change in headache frequency or severity requires re-imaging the brain.
Apr 1, 2012

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Last updated Nov 8, 2015

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