Diagnostic implications of tympanometry in the presence of patent pressure-equalization tubes.
D000158:Acoustic Impedance Tests; D002675:Child, Preschool; D002781:Cholesteatoma / Q000175:diagnosis; D004432:Ear, Middle / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008876:Middle Ear Ventilation