胆脂瘤型中耳炎的HRCT诊断

目的：探讨胆脂瘤型中耳炎的HRCT表现，以提高本病诊断的准确性。方法： 回顾性分析45例（50耳）经手术和病理证实的胆脂瘤型中耳炎的HRCT表现，并与手术结果对照分析。结果：慢性胆脂瘤型中耳炎HRCT表现：（1）上鼓室、鼓室、乳突区及外耳道软组织肿块影为50耳（100％）；（2）骨质破坏，其中包括听小骨破坏为39耳（78％）、盾板破坏26耳（52％）、面神经管破坏16耳（32％）、乙状窦前壁破坏3耳（6％）；（3）骨质破坏累及外耳道4耳（8％）；（4）颅内并发症：耳源性脑膜炎2耳（4％）。结论：慢性胆脂瘤型中耳炎具有特征性HRCT表现，HRCT对指导手术治疗具有重要意义，它是首选的影像学诊断方法。

HRCT diagnosis of otitis media with cholesteatoma

【Abstract】 Objective：To explore the high－resolution CT（HRCT） findings of chronic otitis media with cholesteatoma and to elevate the diagnostic accuracy．Methods：Retrospective analysis of 45 cases（50 ears） confirmed by surgery and pathology of cholesteatoma otitis media HRCT performance and comparative analysis with the surgical results.Result：HRCT manifestations of chronic otitis media with cholesteatoma: (1) attic, tympanic, mastoid area and soft tissue mass in the external auditory canal of 50 ears (100%); (2),bone destruction, including the ossicular destruction of 39 ears (78%), shield plate destruction of 26 ears ( 52%), facial nerve canal destruction of 16 ears (32%), the anterior wall of sigmoid sinus destruction of three ears (6%); (3) bone destruction involving the external auditory canal 4 ears (8%); (4),intracranial complications: otogenic meningitis 2 ears (4%).Conclusion: Chronic otitis media with cholesteatoma characteristic HRCT performance, HRCT in guiding surgical treatment of great significance.It is the preferred method of imaging diagnosis.