中文摘要：

目的观察临床被诊断为单纯型慢性化脓性中耳炎患耳的中耳乳突状态。方法对63例（71耳）单纯型慢性化脓性中耳炎高分辨率CT（HRCT）和手术中中耳腔病变情况详细观察记录。结果71耳根据中耳腔病变的情况大致可以归纳为两组。A组29耳（40．8％），中耳乳突腔很少阴影存在。B组42耳（59．2％），中耳乳突腔有不同程度阴影存在，手术证实系渗出液及肉芽组织等顽固性病变在中耳乳突腔不同部位积存。结论“单纯型”慢性化脓性中耳炎中耳腔病变并不一致，部分患者中耳腔有顽固性病变存在，应该根据中耳腔不同病变情况区别对待。

英文摘要：

Objective To observe pathological changes in the middle ear clefts of those patients traditionally diagnosed as the ＂simple-type＂ chronic suppurative otitis media （CSOM）. Methods CT films and operation records of 63 patients （71 ears） diagnosed as ＂simple-typc＂ csoM were studied retrospectively. Results The 71 ears could be roughly divided into 2 groups according to pathologic changes in the middle ear clefts. Few changes could be found in the middle ear clefts on CT films of Group A （29 ears, 40.8%）. However, middle ear effusion, granulation tissues and other kind of intractable pathologic changes were found in the middle ear clefts of those patients in Group B （42 ears, 59.2%）. Conclusion Pathologic changes in the middle ear clefts of so-called ＂simple-type＂ CSOM are not the same. Intractable pathologic changes can be found in the middle ear clefts of some of these patients. Different patients should bc treated differcntly according to the pathologic changes detected in the middle ear clefts.