what is adenoids
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.denoids Treatments. 1  Adenoids surgery (adenoidectomy): Surgery to remove the adenoids is often required when the adenoids are large enough to cause other health problems. 2  Children's adenoids may be removed surgically with no apparent ill effects.