<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a cyst in the third ventrical showed up on cat scan not on mri they werent shure it might even be a tumor what follow up procedures besides aditional mri at a later day is there needed i was told i dont have to see my neurologist anymore by him and her ordere the mri without a follow up appointment I have severe neck problems he forcefully pushed my neck forward to reach my chin to my chest after i told him i could not do that was that procedure even necessary for a cyst tumor in my middle of the brain  <response>: If this is a cysttumor in 3rd ventricle, it can cause obstruction in CSF for from lateral ventricles down to fourth ventricle and can lead to HY Chat Doctor. Option available are 1 open surgery by neurosurgeon2 Endoscopic third ventriculostomy3 Gamma knife surgery Right procedure will be determined based on patient condition, other morbidity and surgeons expertise. So consult your surgeon ASAP. 