Object:To observe the role of otoendoscopy in middle ear operation.
目的：观察耳内窥镜检查在中耳手术中的应用。
To analyse the results and effective factors of middle ear operation in children and juveniles.
为分析青少年和儿童对中耳手术的承受力及手术效果。
Objective To investigate the location, extension, clinical symptom, image features, and operation treatment of the congenital cholesteatoma of middle ear.
目的探讨先天性中耳胆脂瘤的位置、范围、临床症状、影像学特征及手术治疗。
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