You probably shouldn't post stories like that in here. I'm sorry for your friend, and if you're having a hard time dealing with it there are other forums to post that in. But in a forum for Hypochondriacs who go into panic attacks over a headache thinking it's cancer, a post like this is really really really hurting things.
On the one hand, yes, a post like that could send people in a tizzy here, BUT on the other hand, part of dealing with health anxiety is learning that things like that DO happen to people. No one gets better by avoiding it. It is a fact of life that sometime, something bad could happen. BUT - that doesn't mean that it will happen to you, and it doesn't make something that you have HA about any more likely to actually be something sinister either.
White spots on the brain is a common finding during MRIs, and I wouldn't be surprised if the neurologist just brushes it right off. There is no "it's either this or this." It could still very well be nothing or be caused by something else totally benign!