Method:The temporoal bone slides from 306 ears with OME at the Otopathology Laboratory of the University of Minnesota USA were studied histopathologically under light microscopy.

• 方法：对美国明尼苏达大学颞骨病理实验室306耳各型伴渗出液的中耳炎颞骨连续切片进行了光镜组织病理学观察研究。