Yes, your adenotonsillectomy is really necessary.
D000233:Adenoidectomy; D000234:Adenoids / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D006984:Hypertrophy; D014066:Palatine Tonsil / Q000473:pathology; D014068:Tonsillectomy