Method: 39 cases of 56 ears suffered from chronic catarrhal otitis media were treated by the eustachian catheter.
方法：用咽鼓管导管治疗慢性卡他性中耳炎39例、56耳。
Objective: To summarize the effect of the treatment for the chronic catarrhal otitis media with the eustachian catheter.
目的：总结用咽鼓管导管治疗慢性卡他性中耳炎的疗效。
Objective: To summarize the effect of the treatment for the chronic catarrhal otitis media with the eustachian catheter.
目的：总结用咽鼓管导管治疗慢性卡他性中耳炎的疗效。
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