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(ăd`ənoidz'), common name for the pharyngeal tonsils, spongy masses of lymphoid tissue that occupy the nasopharynx, the space between the back of the nose and the throat. Normally the adenoids, like the palatine tonsils located on either side of the throat, help prevent infection in the surrounding tissues. However, when they become enlarged they interfere with normal breathing and sometimes with hearing. When severely enlarged, adenoids can affect normal dental development, resulting in an alteration of facial expression. Infection of the adenoids is common, the symptoms resembling those of tonsillitis, with which it is frequently associated. Surgical removal of the adenoids is advisable when enlargement and repeated infection interfere with development and health. See respirationrespiration,
process by which an organism exchanges gases with its environment. The term now refers to the overall process by which oxygen is abstracted from air and is transported to the cells for the oxidation of organic molecules while carbon dioxide (CO2
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(or adenoidal growths), enlarged pharyngeal tonsils, which are located in the upper back portion of the throat behind the nasal passage. Adenoids are most frequently observed in children four to eight years of age. The major symptom of adenoids is difficulty in nasal breathing. As a result, the child’s mouth is almost always open, his teeth grow incorrectly, and he is susceptible to chronic head colds. When the adenoids are extremely enlarged, the voice takes on nasal tones, causing m and η to sound like b and d. By blocking the opening of the eustachian tubes, which connect the middle ear to the throat, adenoids cause repeated ear infections that lead to gradual impairment of hearing. Children with adenoids often suffer from insomnia, which results in decreased attention span and poor memory. Sometimes bed-wetting occurs. The treatment of adenoids is surgical. After their removal, nasal breathing does not return immediately, and breathing exercises are beneficial (on the advice of a physician).


References in periodicals archive ?
2-9) Most studies are in developed countries, (3,5-9) where the tonsils and adenoids disease spectrum differs from that of developing countries.
4) reported a much higher HBoV rate of lymphocytes from adenoids (56%) than from tonsils (16%).
While epistaxis (1) and trauma to the turbinates (2) are frequently reported, reports of trauma to the adenoids are rare.
The second option is to remove the adenoids and the third is to do both.
Removing the adenoids has been shown to help some children with otitis media who are between the ages of 4 and 8.
It isn't done as often as in the past, but removing the tonsils and adenoids can help some children who often have throat and ear infections even after being treated with antibiotics and ventilation tubes.
The retrospective study looked at data from 8,245 children ages birth to 18 who had their tonsils and adenoids removed at Mayo Clinic between 1980 and May 2009.
The operation to remove Dylan's adenoids and tonsils was deemed "fairly urgent" because he was identified as a "child with obvious breathing problems".
In children, it also contains the adenoids, which can enlarge to block the nasopharynx, forcing a child to breathe through the mouth.
Rotskoff, "but compounding issues, such as enlarged tonsils and adenoids, can elevate to sleep apnea.
Summary: Tonsils and adenoids are composed of tissue that are similar to the lymph nodes or 'glands' found in the neck, groin, and other places in the body.
Until recently, enlarged tonsils or adenoids were believed to cause most sleep-disordered breathing in children, but the study found no link between tonsil size and disordered breathing.