I would get in to a qualified surgeon ASAP...
Since I don't know and the report does not say - which direction the cyst is growing (btw - cysts? erode? isn't that a bit unusual? I could see mass effect but a tumor could erode but a cyst is a ball of fluid - so I would double check with a surgeon on this - just my layman's take here) it is hard to say what part of the cortex is involved but I would also think it would only be a small involvement at this point - but they need to get on the ball and remove this before it gets worse!
I looked up NE cyst and it said "Neurenteric cysts, along with Rathke cleft and colloid cysts, are endodermally derived lesions of the CNS." I would really run to a pituitary center...
the MRI said that my cortex is being eroded by this cyst. the 2nd MRI said that a chordoma isn't ruled out- median survival on chordomas is 7 years
the one endo I went to was really nasty to me
Alas, you may have seen an endo who does not know pituitary stuff? Or just a lousy doc...
So they are letting you run around with a possible chordoma - so the doc thinks it is not for some reason? What tests have they run?