vestibular schwannoma

a special test that is performed by an experienced radiologist where a plastic tube or catheter is inserted into one of the blood vessels in the groin and is then advanced to the blood vessels in the neck. Using this test, multiple tumors can be identified and arterial blood vessels feeding the tumor can be clotted off.

a vessel which carries richly oxygenated blood from the heart to other organs

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

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

on both sides 

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

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

near the brainstem 

portion of the brain found in the posterior fossa which regulates fine motor coordination 

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. 

part of the inner ear involved in hearing

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. 

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

the white part of the eye 

temporary removal of a portion of the skull over the brain. 

a computerized tomography scan or special X-ray which allows more detailed views of bony structures and soft tissue

a tough fibrous layer found immediately under the skull that protects the brain. 

a balance test which involves recording movements of the eyes while changing positions of the head with respect to the earth's gravitational field. The eye movements are also recorded while cool and warm air is blown into the ear canal. 

a procedure done during angiography which involves blocking the blood vessels supplying blood to the tumor 

a condition of excessive fluid within the endolymphatic space 

a paraganglioma which arises from paraganglia around the jugular bulb 

a paraganglioma which arises from paraganglia in the middle ear 

a buildup of spinal fluid that can lead to brain dysfunction and death 

a bony canal which contains the cochlear, vestibular, and facial nerves 

a vein that collects blood from the brain and empties eventually into the heart 

a venous cavity which receives blood from the sigmoid sinus and empties into the internal jugular vein

a protein found in cells that form squamous epithelium 

glands that produce tears in the eyes 

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

a procedure to remove part of the mastoid in order to clean out infection and remove cholesteatoma 

endolymphatic hydrops for which no cause can be identified 

a hearing preservation approach which allows visualization of the roof of the internal auditory canal for removal of small tumors. This approach involves a craniotomy above the ear. 

A type of hearing loss caused by a problem with both the middle and inner ear/nerve simultaneously. 

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

a substance which insulates nerves and allows for more efficient transmission of electrical signals 

area where schwann cells meet oligodendroglia cells 

type of cell which coats the central segment of nerves

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

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

balance organs responsible for detecting linear acceleration of the head. These include the utricle and the saccule. 

small stones found in the otolith organs 

cells located around the middle ear, jugular bulb, or carotid artery in the neck which are thought to detect oxygen and carbon dioxide levels in the bloodstream

another type of fluid found in the inner ear 

near the inner ear

bone that is located deep to the inner ear

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

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. 

part of the inner ear responsible for gathering information relating to linear acceleration of the head 

type of cell which coats the peripheral segment of nerves and produces a substance called myelin

part of the inner ear involved in gathering information on head motion

A type of hearing loss arising from the inner ear and/or nerve, which in most cases is permanent, due to aging, ototoxic drugs, noise exposure, etc. Hearing aids are the best remedy for a sensorineural loss.

a large vein found deep within the mastoid which collects blood from the brain and empties into the jugular bulb

skin

a hearing preservation approach which involves a craniotomy far behind the ear that allows visualization of the posterior portion of the internal auditory canal.

ringing or noise in the ears

an approach which involves an incision behind the ear and a craniectomy through the semicircular canals of the inner ear. This allows visualization of the posterior aspect of the internal auditory canal. Hearing is always lost.

the nerve which transmits information on facial sensation, not motion

a procedure to repair the eardrum and the ossicles

on one side

part of the inner ear responsible for gathering information relating to linear acceleration of the head

a vessel that carries blood away from other organs and to the heart. The red blood cells within veins have a lower oxygen content.

a sensation of surrounding objects spinning around you or a sensation that you are being spun around

pertaining to the function of balance

acoustic neuroma