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Adenoids are a small mass of lymphoid tissue located in the back of the nasal cavity, above the roof of the mouth. They are also known as the pharyngeal tonsils, nasopharyngeal tonsils or simply adenoids. They are part of the body's immune system and help to protect the body from infection by trapping and neutralizing bacteria and viruses that enter the body through the nose and mouth.Adenoids are located near the Eustachian tubes, which connect the middle ear to the back of the throat. They are made up of lymphoid tissue, which is a type of tissue that is involved in the immune system. The lymphoid tissue in the adenoids contains cells that produce antibodies, which help to fight off infections.Adenoids are more prominent in children than in adults and tend to be largest between the ages of 3 and 7. They can become enlarged in response to an infection, leading to symptoms such as difficulty breathing through the nose, snoring, frequent ear infections, and difficulty sleeping.When the adenoids become enlarged, they can obstruct the airway and make it difficult to breathe through the nose. This can lead to sleep apnea, which is a condition characterized by pauses in breathing during sleep. Enlarged adenoids can also cause ear infections and hearing loss.Adenoids can be removed surgically if they become enlarged and cause problems. This procedure is called adenoidectomy. Adenoidectomy is usually done in children and adolescents, although in some cases it may be done in adults. The surgery is done under general anesthesia and typically takes about 30 minutes to complete.In conclusion, adenoids are a small mass of lymphoid tissue located in the back of the nasal cavity, above the roof of the mouth. They are part of the body's immune system and help to protect the body from infection by trapping and neutralizing bacteria and viruses that enter the body through the nose and mouth. Adenoids are more prominent in children than in adults and tend to be largest between the ages of 3 and 7. They can become enlarged in response to an infection and cause symptoms such as difficulty breathing through the nose, snoring, frequent ear infections, and difficulty sleeping. Adenoids can be removed surgically if they become enlarged and cause problems, this procedure is called adenoidectomy.