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Glossary

 

Glossary

Audiogram
Auditory brainstem response
Bilateral
Canal wall down procedure
Canal wall up procedure
Chorda tympani nerve
Cochlea
Conductive loss
Congenital cholesteatoma
CT scan
Dura
Internal auditory canal
Mastoid
Mastoidectomy
Modified radical mastoidectomy
Ossicles
Ossicular reconstruction
Petrous apex
Petrous apex epidermoid
Peripheral
Radical mastoidectomy
Squamous epithelium
Tinnitus
Tympanic membrane
Tympanoplasty
Unilateral
 

Audiogram

A hearing test conducted in a sound-proof room by a qualified audiologist

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Auditory brainstem response

A special hearing test done while a patient is hearing clicks or certain tones

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Bilateral

On both sides

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Canal wall down procedure

A procedure where the bony partition between the back part of the canal and mastoid is removed

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Canal wall up procedure

A procedure where the bony partition between the back part of the canal and mastoid is kept intact

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Chorda tympani nerve

A nerve which transmits taste information from the front two-thirds of the tongue back to the brain.   The nerve travels through the middle ear close to the ossicles

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Cochlea

Part of the inner ear involved in hearing

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Conductive Loss

A type of hearing loss which arises from the middle ear, due to wax, fixation of  the ossicles, ear infection, etc., and is often easily corrected by medication and/or surgery

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Congenital cholesteatoma

A cholesteatoma that arises in an ear from squamous epithelium that became entrapped within the middle ear or petrous apex

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CT Scan

A computerized tomography scan or special X-ray with the unique ability to image a combination of soft tissue, bone, and blood vessels

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Dura

A tough fibrous layer which is found immediately under the skull which protects the brain

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Internal auditory canal

A bony canal which transmits the cochlear, vestibular and facial nerves

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Mastoid

The bone located directly behind the external ear which communicates with the middle ear

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Mastoidectomy

A bony canal which transmits the cochlear, vestibular and facial nerves

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Modified radical mastoidectomy

A procedure where the bony partition between the back part of the ear canal and mastoid is removed and an ossicular reconstruction with repair of the eardrum is also performed

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Ossicles

The three bones behind the eardrum, namely the malleus, incus and stapes

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Ossicular reconstruction

A procedure to repair the ossicles so that sound transmission can occur to the inner ear

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Petrous apex

Bone that is located deep to the inner ear

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Petrous apex epidermoid

A cholesteatoma that arises from squamous epithelium that became entrapped within the petrous apex

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Peripheral

Near the inner ear

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Radical mastoidectomy

A procedure done where the eardrum, malleus and incus are removed and the bony partition between the back part of the ear canal and mastoid is also removed

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Squamous epithelium

Skin

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Tinnitus

Ringing in the ears

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Tympanic membrane

Eardrum

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Tympanoplasty

A procedure to repair the eardrum and the ossicles

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Unilateral

On one side

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Copyright © 2001  [OrganizationName]. All rights reserved.
Revised: 04/22/02.

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Send mail to Lisa with questions or comments about this web site. Last modified: 03/20/04
The Cholesteatoma Resources web site offers and provides information of a general nature about cholesteatoma. The information provided is not intended to replace surgical or medical advice or recommendations. Any information in the messages, postings or articles on the web site should not be considered a substitute for consultation with a medical professional to address individual medical needs. Individuals' particular facts and circumstances will determine the treatment which is most appropriate.

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