Hey that is not a tumor!

Doctors in Arizona got a big surprise when looking into a womans brain for a tumor.

Rosemary Alvarez started experiencing numbness in her arm and blurred vision. She went to the emergency room twice and had a cat scan, but everything came up clear, MyFOXPhoenix.com reported.

It wasn’t until doctors took a closer look at an MRI that they discovered something very disturbing.

“Once we saw the MRI we realized this is something not good,” neurosurgeon, Dr. Peter Nakaji told the news station. “It’s something down in her brain stem which is as deep in the brain as you can be.”

Alvarez was wheeled into surgery where Nakaji and his colleagues were expecting to remove a tumor, but they uncovered a worm instead.

On a video of the surgery, Nakaji can be heard chuckling after he made the discovery.  All I can say is yuk!  That is totally gross.