There were 159 cholesteatoma ears, including attic cholesteatoma 76 ears, sinus cholesteatoma 37 ears, and tensa cholesteatoma 46 ears.

• 其中159耳为中耳炎合并胆脂瘤，包括上鼓室型胆脂瘤76耳，鼓室窦型胆脂瘤37耳及鼓膜紧张部型胆脂瘤46耳。