Acoustic neuroma

Encyclopedia of Cancer, 20050229 by M.S. Lisa Andres, CGC

Computed tomography (CT)An examination that uses a computer to compile and analyze the images produced by x rays projected at a particular part of the body.

DNA testingTesting for a change or changes in a gene or genes.

Gene A building block of inheritance, made up of a compound called DNA (deoxyribonucleic acid) and containing the instructions for the production of a particular protein. Each gene is found on a specific location on a chromosome.

Magnetic resonance imaging (MRI)A test which uses an external magnetic field instead of x rays to visualize different tissues of the body.

Myelin sheathThe cover that surrounds many nerve cells and helps to increase the speed by which information travels along the nerve.

Neurofibromatosis type 2 (NF2)A hereditary condition associated with an increased risk of bilateral acoustic neuromas, other nerve cell tumors and cataracts.

Protein A substance produced by a gene that is involved in creating the traits of the human body such as hair and eye color or is involved in controlling the basic functions of the human body.

SchwannomaA tumor derived from the cells of the myelin sheath that surrounds many nerve cells.

TinnitusA ringing sound or other noise in the ear.

VertigoA feeling of spinning or whirling.

Vestibulocochlear nerve (Eighth cranial nerve)Nerve that transmits information, about hearing and balance from the ear to the brain.