title: [Trend changes in the adenotonsillar surgery].
abstract: In order to evaluate possible trend changes in the epidemiological factors of adenotonsillar surgery, a total of 1,958 operations performed between 1992 and 2002 were reviewed.
  
  
  RESULTS
  One third of the operations were to remove tonsils in comparison with the two thirds that were to remove adenoids. Three procedures were used: 59% adenoidectomies, 28% adenotonsillectomies and 13% tonsillectomies. During the study period, the percentage of adenotonsillectomies decreased, whereas the number of adenoidectomies increased. In general, this kind of surgery is mainly performed on males.
  
  
  CONCLUSIONS
  Although we have not discovered variations regarding gender and average age for the operations, adenotonsillar surgery has increased over recent years and the percentage ratio of the various procedures has altered as a result of new indications.
authors.affiliation: Servicio de ORL, Hospital Clinico Universitario de Valladolid. muphy@usuarios.retecal.es
authors.forename: J I
authors.initials: JI
authors.lastname: Benito Orejas
authors.forename: M
authors.initials: M
authors.lastname: Alonso Mesonero
authors.forename: A
authors.initials: A
authors.lastname: Almaraz Gómez
authors.forename: D
authors.initials: D
authors.lastname: Morais Pérez
authors.forename: J
authors.initials: J
authors.lastname: Santos Pérez
mesh_terms: D000233:Adenoidectomy / Q000639:trends*; D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D010608:Pharyngeal Diseases / Q000601:surgery*; D012189:Retrospective Studies; D014068:Tonsillectomy / Q000639:trends*