The evaluation of an acoustic neuroma begins with a history and physical examination.

The physical examination in someone with an acoustic neuroma is usually normal.

Testing is required to make the diagnosis of an acoustic neuroma.

Tests that may be used to make the diagnosis of an acoustic neuroma include:

• Brain CT scanning
• Brain MRI scanning
• Auditory evoked potentials
• Brain biopsy:
• Important in order to determine the type of cells causing the tumor.
• A neurosurgeon can often remove a small sample of brain tissue through a small hole in the skull.
• The tissue will then be examined under a microscope.