摘要
目的:探讨中耳癌的CT表现和特征,为临床诊治提供依据。方法:对经手术病理证实的6例中耳癌患者术前CT表现进行回顾性分析。结果:中耳癌的CT特征:①表现为以中、下鼓室为中心的软组织密度灶,密度均匀,CT值50HU左右,外耳道及咽鼓管早期受累;②呈溶骨性骨质破坏,形态不规则,边缘无骨硬化表现,外耳道后壁破坏较前壁严重;③病灶侵入颞叶,形成肿块,灶周脑水肿不明显;④增强扫描见病灶有中度强化。结论:CT能确定中耳癌的存在及精确显示肿瘤累及范围。
Objective:To explore the CT appearances of the middle ear cancer,and to provide evidences for clinical diagnosis and treatment.Methods:The pre-surgical CT images of 6 cases with surgically and pathologically proved middle ear cancer were retrospectively studied.Results:①The center of the homogeneous density soft tissue masses (mean CT value was 50HU) were located in the middle and lower tympanum,and the external auditory canal or the pharyngotympanic tube was involved in the earlier period;②the destructed bone was irregular and without sclerotic margin,and the destruction of the posterior wall of the external auditory canal was severe than the anterior-wall;③the mass encroached upon the temporal lobes,and formed another mass in it without apparent encephaledema;④after the injection of contrast material,the masses enhanced moderately.Conclusion:CT was found to be an accurate diagnosis method of the middle ear cancer and can demonstrate the extent of tumor invasion.
出处
《放射学实践》
2005年第7期575-577,共3页
Radiologic Practice
