The two most common reasons for removal of tonsils and adenoids are recurrent infection despite antibiotic therapy, and difficulty breathing due to enlarged tonsils and/or adenoids. Some orthodontists believe chronic mouth breathing from large tonsils causes malformations of the face and poor teeth alignment. Adenoids are very close to the Eustachian tube and when infected or enlarged can contribute to ear disease. Much more rarely, tonsils are removed to check for the possibility of cancer in patients with very asymmetric tonsils or other signs of malignancy.
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