yup - the grey thing...

I haven't got a lot of symptoms, but I did have a severe headache that heavy duty pain meds couldn't touch for 2 months -- that is when that image was taken.

Really my only symptoms - my cerebellum is abnormally small, so I kind of have bad balance and poor body-space awareness. I also get killer headaches when there is a high pressure weather system. Otherwise, it just kind of chills out in there and hasn't changed size in the 3 years it has been under investigation.