Hello. thank you for adding me to the group. I was just told yesterday that my 15 year old son's MRI has revealed a 1" (25mm/2.5cm) pineal cyst. We were referred to the pediatric neurologist by our PCP after my son complained of consistent (but not debilitating) headaches off and on. Needless to say I am very scared, but they assured me that as of right now this is not life-threatening. We now have a 2nd contrast-image MRI scheduled for next week and an appointment with a pediatric neurosurgeon next month. I have not shared this with my son as I don't want to scare him before I am better informed. I have a lot of questions that I am developing as I research (which I have just started to do) but am relieved to have found this community. What makes me nervous is its size. We are in Boston so are being seen at the Massachusetts General Hospital Center for Children, which is a great hospital. Has anyone had any experience with this hospital and its doctors? The size of the cyst is very concerning to me... and I am nervous that he will need surgery. Not sure that I have specific questions, yet, but I'd sure love to hear about experiences with cysts of this size. Thank you!