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Nasopharyngoscopy
Looking into the nose and throat and inspecting the vocal cords using a flexible telescope.
Neck dissection
Removal of the lymph glands and some of the muscles on one side of the neck in order to determine if they are involved with cancer and to remove any cancer located within them.
Neoadjuvant
Therapy given before the main therapy in order to improve the chance of success, such as chemotherapy or radiation therapy given before surgery.
Neural Plasticity
The ability of the brain and/or certain parts of the nervous system to adapt to new conditions, such as an injury.
Neural Prostheses
The devices that substitute for an injured or diseased part of the nervous system, such as the cochlear implant.
Neural Stimulation
To activate or energize a nerve through an external source.
Neurapraxia
Temporary decrease of nerve function.
Neurofibromatosis
A group of inherited disorders in which noncancerous tumors grow on several nerves that may include the hearing nerve.
Neurofibromatosis Type 1 (NF-1 von Recklinghausen's)
A group of inherited disorders in which noncancerous tumors grow on several nerves that may include the hearing nerve. The symptoms of NF-1 include coffee-colored spots on the skin, enlargement or deformation of bones and neurofibromas.
Neurofibromatosis Type 2 (NF-2)
A group of inherited disorders in which noncancerous tumors grow on several nerves that usually include the hearing nerve. The symptoms of NF-2 include tumors on the hearing nerve which can affect hearing and balance. NF-2 may occur in the teenage years with hearing loss.
Neurogenic Communication Disorder
The inability to exchange information with others because of hearing, speech, and/or language problems caused by impairment of the nervous system (brain or nerves).
Node Dissection
Removal of the lymph glands in the area near a tumor in order to determine if they are involved with cancer and to remove any cancer located within them.
Noise-Induced Hearing Loss
Hearing loss caused by exposure to harmful sounds, either very loud impulse sound(s) or repeated exposure to sounds over 90 decibel levels over an extended period of time that damage the sensitive structures of the inner ear.
Nonsyndromic Hereditary Hearing Impairment
Hearing loss or deafness that is inherited and is not associated with other inherited clinical characteristics.
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