My advice would be that fenestration is an outstanding treatment. From what I understand, the chance of re-ocurrence is low. It certainly isn't fun walking into a surgical theater for brain surgery, but I am sure glad that I did it, and would do it again. The procedure was keyhole surgery, and from my search online for videos of the procedure, it seems to involve a delicate teasing apart of tissue until the cyst is reached. I actually liked the idea of the cyst being popped ("fenestrate" means making a window in the wall of the cyst), and all the accumulated CSF being drained away. After the keyhole surgery, there is just a small indentation left on top of my head where the instrument went in. When I realized that, compared to other patients on the ward who had undergone brain tumour surgery, my scar was pretty minor and my recovery was really rapid, I felt a big sense of being very fortunate.