Acoustic tumor in a young adult: documented growth rate.

The diagnosis of acoustic neuroma is being made more easily with the advent of late-generation, high-resolution computed tomography. It is known that acoustic tumor growth in the elderly is often slow. On the other hand, it is believed that an acoustic tumor can grow very rapidly in the young. A case of acoustic neuroma in a young man with computed tomographic evidence of extremely rapid growth over a period of fifteen months is presented.