摘要
目的 :探讨胆脂瘤型慢性中耳炎 (CMC)的HRCT特征 ,提高对该病的诊断及鉴别诊断水平。方法 :回顾性分析 3 8例CMC患者的临床和HRCT检查资料 ,并与手术病理结果对照。结果 :CMC患者HRCT表现 :①中耳腔内团块状影、周围有低密度环包绕。②骨质改变 ,包括盾板、上鼓室外侧壁破坏 ,中耳腔扩大、周缘骨质硬化 ,听小骨移位、破坏 ,严重者可伴有乙状窦壁、鼓室盖、面神经管及半规管的破坏。③大多数为硬化型乳突。结论 :HRCT对大多数CMC可作出准确诊断和鉴别诊断 。
Objective:To discuss the high resolusion CT (HRCT) features and to get a better understanding about the diagnosis and differential diagnosis of chronic otitis media with cholesteatoma.Methods:Clinical and HRCT features of 38 cases of chronic otitis media with cholesteatoma were analyzed retrospectively and correlated with the pathological findings. Results:HRCT findings of 38 cases of chronic otits media with cholesteatoma included:①Abnormal soft-tissue mass shadows in tympanic cavity of middle ear with low density ring around;②Bone changes,including the bone erosion of scutum attic lateral wall,and enlargment of the tympanic cavity with sclerotic border,the dislocation and destruction of the ossicles.The sigmoid sinus plate,tympanic tegmen,semicircular canal and facial nerve canal were destroyed in severe cases.③Sclerotic mastoid was observed in most cases.The diagnostic accuracy of HRCT for chronic otitis media with cholesteatoma was 94.7%～100%.Conclusion:Most cases of chronic otitis media with cholesteatoma can be diagnosed and differentiatied by HRCT,it should be the primary examination method at present.
出处
《放射学实践》
2004年第10期753-755,共3页
Radiologic Practice
