I am not familar with the abbreviation PV. I would encourage you to have a formal opinion with a Neurosurgeon who can review the CT scans and provide advice. Without reviewing the scans I cannot comment on what the process may be. Based on your description of possible mass affect, it should be evaluated as soon as possible. If you do not have a neurosurgeon available, then start by seeing a neurologist. Good luck.
Dr.Sangeeta Narang.
Dr.Sangeeta Narang.