Matter Behind the Cerebellum

Hi there, I just recently had a MRI of my brain in January 2010 and I saw something that perked my curiosity. And, although I do have an appointment to see a neurologist for other reasons, it's still a couple months out from now. The thing that caught my eye was a bit of matter that appears to be an extension of the brain behind and almost below the cerebellum (see the photo I linked). I did have a brain injury in 2000 with multiple fractures, I was about 12 years old, walked in front of a pickup going 25-30 mph... though, I'm not sure if that's at all related to this. I was just wondering what it was (brain? cerebellum? cancer??), if its unusual or not, and what sort of effects it might have on my brain function. Any thoughts/speculation much appreciated!

http://www.flickr.com/photos/prenoud/4337893441/sizes/l/

[Lindad1966]

Hi, your link didn't work.

[imphil]

Yeah, I haven't figured out how to hyperlink, but copy/paste always works =D