Thanks for your response @hopeful33250 - I have an appointment with my PCP next Friday (the 17th) and wanted to start there to get as much detail as I could from her. All I know so far is from the brief phone call from her the day after the MRI and, at first, I was so relieved that they had an answer to this pain after so long, I didn't think to ask any other question. It's only been in this past week that I started reading about it and thinking that I need to know more. So I want to go in and ask some in depth questions - what type of cyst is it, do they even know what type, how big is it, what are the chances of a rupture, what are the chances of it being more than just a cyst, etc. I want to see how many answers I can get from her and then see if she's willing to give me a referral to someone else. My insurance insists on a referral for everything! Any other thoughts on other questions I should be asking?