Ask a Neurologist. Get Answers to Your Neurology Questions.
This is Dr. David
your neurosurgeons were not able to drain the cyst?
how large is the arachnoid cyst?
where is the location of it?
fenestration really just mean draining the cyst to let the fluid out.
is the cyst putting pressure on your brain?
it can take two years for the fluid to re-absorb?