Abstract
To examine the efficacy of collagen implant (atelocollagen) on patulous eustachian tube, 9 ears of 7 patients were treated by the injection of collagen into the pharyngeal orifice of the tube. Under the endoscopic observation, injection was repeated every one to four week until both the subjective and objective signs had disappeared. After the treatment, complete relief was obtained in all ears. Recurrence was observed in two ears at 3 and 4 months respectively, but it was controlled by additional injection. No side effect was observed in any of the ears. These results indicate that injectable collagen was useful for the treatment of patulous eustachian tube.
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