ABSTRACT
OBJECTIVE@#To evaluate the treatment and diagnosis of early tympanic isthmus obstruction and dysfunction of eustachian tube.@*METHOD@#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.@*RESULT@#Two hundred and sixty of three hundred case were cured, thirty cases were improved, ten cases were inefficacy.@*CONCLUSION@#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.