Hearing loss, ringing in your hear, unexplained dizziness. You might think those are normal parts of aging, but for some, they could be signs of a tumor. The tumor is called an acoustic neuroma.

Kris Siwek was 28 when she noticed she had lost some hearing in her left ear. Things got worse after a hearing test and an MRI that revealed a four-centimeter tumor on the nerve to her inner ear. "I ...