The adenoids are a mass of soft tissue behind the nasal cavity. Like lymph nodes, adenoids are part of the immune system and are made of the same type of tissue (lymphoid tissue). White blood cells circulate through the adenoids and other lymphoid tissue, reacting to foreign invaders in the body.

We all have adenoids at birth and in childhood, but as we head into adolescence they start to shrink. By adulthood, most people’s adenoids have disappeared.

Adenoids Conditions

  • Adnoiditis : Inflammation of the adenoids, often from infection. Bacteria or viruses may cause adenoiditis.
  • Enlarged adenoids: In children, the adenoids can get larger because of infection or reasons that are unclear. Very large adenoids can interfere with breathing or with the flow of mucus.
  • Obstructive Sleep Apnoea : While sleeping, enlarged adenoids may intermittently block the flow of air through the throat. This can cause a person to stop breathing for a few seconds (known as apnea) and can occur several times each night.
  • Ear Infections (otitis): In children, enlarged adenoids may block the Eustachian tubes, which drain fluid from the ears into the throat. If these tubes are unable to drain, it can lead to repeated ear infections.

Adenoids Tests

  • Endoscopy: A small, flexible tube with a lighted camera on the end is inserted into the nose or throat. A doctor can view the nasal passages and adenoids on a video screen during endoscopy.
  • A CT scanner takes multiple X-rays, and a computer constructs detailed images of the sinuses, nasal cavities, and adenoids.
  •  An MRI scanner uses a high-powered magnet and a computer to create highly detailed images of the nasal passages, sinuses, and adenoids.
  •  An X-ray film taken from the side of a person’s face (lateral view) can sometimes show enlarged adenoids.

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