title: Detection of subclinical disorders of the hypopharynx and larynx by gastrointestinal endoscopy.
abstract: OBJECTIVE
  It is believed that blind introduction of an endoscope into the esophagus causes less patient discomfort. The aim of this study was to evaluate the yield and usefulness of endoscopic screening of the hypopharyngeal and laryngeal regions.
  
  
  METHODS
  A total of 1623 patients who underwent upper gastrointestinal endoscopy for gastrointestinal disease between 1987 and 1992 had the instrument introduced under visual guidance, and were retrospectively studied.
  
  
  RESULTS
  We found 15 pathological conditions in the throat (0.92%): two small cancers (0.12%), one advanced cancer (0.06%), two hypopharyngeal polyps (0.12%), one cyst (0.06%), and eight cases of lymphoid hyperplasia (0.49%) in the hypopharyngeal region. A large Zenker's diverticulum was detected in one patient (0.06%). All of these cases could have been overlooked if the instrument had been passed blindly through the throat.
  
  
  CONCLUSIONS
  In patients undergoing upper gastrointestinal endoscopy, the procedure of screening the hypopharyngeal and laryngeal region is justified to detect earlystage disease in these regions.
authors.affiliation: Third Dept. of Internal Medicine, Kagawa Medical School, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: K
authors.initials: K
authors.lastname: Matsuda
authors.forename: K
authors.initials: K
authors.lastname: Arima
authors.forename: Y
authors.initials: Y
authors.lastname: Uchida
authors.forename: M
authors.initials: M
authors.lastname: Nishioka
authors.forename: T
authors.initials: T
authors.lastname: Haruo
authors.forename: T
authors.initials: T
authors.lastname: Uohashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016145:Endoscopy, Digestive System; D005260:Female; D006801:Humans; D007012:Hypopharyngeal Neoplasms / Q000453:epidemiology* / Q000473:pathology; D007013:Hypopharynx / Q000473:pathology; D007564:Japan / Q000453:epidemiology; D007818:Laryngeal Diseases / Q000453:epidemiology* / Q000473:pathology; D007822:Laryngeal Neoplasms / Q000453:epidemiology* / Q000473:pathology; D007830:Larynx / Q000473:pathology; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D011230:Precancerous Conditions / Q000453:epidemiology / Q000473:pathology; D012189:Retrospective Studies