Should I be considering surgerical removal of an umed colloid syst in the third vernticle of my brain?

I was daignosed with having a 5mm lesion in the 3rd ventricle of my brain, by an accidental finding after going to the ER for headaches that weren't helped with medication, nausea, and vision problems. After 4 months of doctors, I have also been told that I have psuedotumor cerebri becuase I have increased intercranial pressure and visual field loss but have no papilladema. I have neuropathy in my feet and apparently, according to a 2nd opinion doctor have increased sensitivity in my upper thoracic and cervical vertebrea. I also have been found to be excessively tired during the day and have a B-12 deficiency. Can you tell me if these things could be related to the cyst. I know that the lesion in my brain what not present 10 years ago during CT and MRI testing but now is there. Does this need to be removed and if so could it be causing my problems. I am on medicaton for psuedotumor cerebri, but it doesn't really seem to help. I am desperate for some answers! Thank you