Chronic obstruction of the eustachian tube treated with a tympano-maxillary shunt.
D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D004427:Ear Diseases / Q000601:surgery*; D004432:Ear, Middle / Q000601:surgery; D005064:Eustachian Tube; D005500:Follow-Up Studies; D006801:Humans; D008443:Maxillary Sinus / Q000601:surgery*; D008722:Methods; D008875:Middle Aged; D011312:Pressure; D014432:Tympanic Membrane / Q000601:surgery*