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- Question: I am a healthy young lady, 19 years old. I have been recently diagnosed with an arachnoid cyst on my brain and the size is 9 cm. I never experienced headaches until this year. I have been feeling lightheaded with blurry vision. I have an upcoming surgery in June and I want to know the pros and cons. The doctors told me that I probably had it since birth but I was a premature baby, with a twin. I got my medical records and it does not show that I had it before. I am concerned for my twin sister, Is it genetic?
These are not usually genetic. It could be related to prematurity but it is
impossible to know. If you are concerned, I would ask for a second opinion
from another neurosurgeon at a major treatment center.