In 1995 I had a tumor removed from my left ear. It was a cholostiotoma (sorry I know this is not spelled correctly), and a very rare case. They weren't able to get all of the tumor, so there has always been a chance that it could come back. Before the tumor was discovered, I experienced a "rushing" sound in my left ear, like hearing your heart beat. Now, 12 years later, I am experiencing this same symptom again. It is getting increasingly worse, very loud. I have seen my doctor to rule out any type of infection or fluid build up. There is nothing to be seen. I am scheduled for an MRI, but I am really nervous that this tumor might have grown back. I am wondering if this sounds possible after 12 years, and the tumor is not visible without an MRI, behind some bone or something. I just need some reassurance, as I am really worried. Thank you for your time.