抗生素问世以来,急性融合性乳突炎(ACM)成为急性中耳炎不常见的并发症,随着耐药菌(如肺炎链球菌)的出现,其发生率可能增高。由于ACM常采用紧急经皮质乳突凿开术,所以需及时确诊。CT对于诊断ACM很有价值,以前的诊断标准包括乳突气房间隔和乳突侧壁骨皮质的侵蚀。近年我们观察到C Since the advent of antibiotics, acute fusion mastoiditis (ACM) has become an uncommon complication of acute otitis media, with the emergence of resistant bacteria (such as S. pneumoniae), the incidence may be increased. As ACM often used emergency cataract mastoidectomy, so the need for timely diagnosis. CT is valuable for the diagnosis of ACM. Previous diagnostic criteria included erosion of the mastoid atrial septum and the cortical bone of the mastoid. In recent years we have observed C