Went to get yet another MRI today, this one with contrast meaning they injected me with dye to contrast against the non-dye scans. They found a cyst on my brain, an arachnoid cyst which is fluid filled. The debate isn't over whether it is malignant or benign (they assure me it's the latter), it is whether, because of the size, about 6 cm, it needs to be removed. I must admit that having someone tinker with my head scares me to a great degree.