Altogether there are hundreds of lymph nodes. You have probably felt your own at some point in your life. Lymph nodes can enlarge in anybody when there is infection or inflammation. Sometimes a reactive lymph node stays big for a long time after the original infection clears. Lymphoid tissue, a lot like tonsils.
Adenoids are temporary, start with our first year of life , usually end by the eighth.
All the way at the back of the nose, above and behind the uvula. Enlargement can block both the nose and eustachian tube. Removal of adenoids can help reduce ear infections, middle ear fluid, sinus infections and mouth breathing - in the child whose adenoids are aggravating infection or causing blockage. Adenoids usually fade away by age seven. They can hang around until the twenties.