Adenoids are small masses of lymphatic tissue located at the back of the nasal cavity, above the roof of the mouth. They play a role in the immune system by helping to fight infections, especially in children. Adenoids are part of the body's defense system, working alongside other tissues like tonsils. In some cases, adenoids can become enlarged due to frequent infections or allergies, leading to breathing difficulties, snoring, or ear problems. If these issues persist, a doctor may recommend removal through a procedure called adenoidectomy. This surgery is common and can help improve a child's quality of life.