title: [Early diagnosis and treatment of the tympanic isthmus obstruction].
abstract: OBJECTIVE
  To evaluate the treatment and diagnosis of early tympanic isthmus obstruction and dysfunction of eustachian tube.
  
  
  METHODS
  Three hundred patients (338ears) suffering from early tympanic isthmus obstruction were examinated and observed from 1991 to 2004, and were injected triamcinolone into tympanic cavity at the position of hypokinesis or blockaded the external acoustic meatus according to different state of the illness.
  
  
  RESULTS
  Two hundred and sixty of three hundred case were cured, thirty cases were improved, ten cases were inefficacy.
  
  
  CONCLUSIONS
  Tympanic isthmus obstruction is a pathognostic type of secretory otitis media. There is significant difference between tympanic isthmus obstruction and secretory otitis media caused by dysfunction of eustachian tube. Prolonged tympanic isthmus obstruction is a reason of primary cholesteatoma of epitympanum's pathogeny. It is important to diagnose and treat of the tympanic isthmus obstruction early.
authors.affiliation: Department of Otolaryngology, the First Hospital, Fujian Medical University, Fuzhou, 350005, China. lizhichun0322@163.com
authors.forename: Zhichun
authors.initials: Z
authors.lastname: Li
authors.forename: Shengnan
authors.initials: S
authors.lastname: Ye
authors.forename: Youhui
authors.initials: Y
authors.lastname: Lin
authors.forename: Yubai
authors.initials: Y
authors.lastname: Yin
authors.forename: Zixiang
authors.initials: Z
authors.lastname: Yi
mesh_terms: D000158:Acoustic Impedance Tests; D000293:Adolescent; D000328:Adult; D001301:Audiometry, Pure-Tone; D002648:Child; D004432:Ear, Middle / Q000473:pathology*; D042241:Early Diagnosis; D005064:Eustachian Tube / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000175:diagnosis* / Q000601:surgery; D055815:Young Adult