早期获得性中耳小胆脂瘤的HRCT表现 |
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引用本文: | 刘凯,牛学才,程东风,王道才,柳澄. 早期获得性中耳小胆脂瘤的HRCT表现[J]. 中国中西医结合影像学杂志, 2009, 7(4): 257-259. DOI: 10.3969/j.issn.1672-0512.2009.04.006 |
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作者姓名: | 刘凯 牛学才 程东风 王道才 柳澄 |
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作者单位: | 1. 山东省医学影像学研究所,山东,济南,250021 2. 山东省济南市第四人民医院,山东,济南,250031 |
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摘 要: | 目的:探讨各向同性下获得性中耳小胆脂瘤的HRCT表现特点。方法:回顾性分析获得性中耳小胆脂瘤39耳,均采用各向同性扫描及多向调整MPR技术进行显示。结果:获得性中耳小胆脂瘤的HRCT表现可分为3型:鼓室回缩囊4耳,松弛部胆脂瘤27耳,紧张部胆脂瘤8耳。结论:①鼓室回缩囊表现为边缘不光滑的含气腔,是未形成实性胆脂瘤前的表现形式;②松弛部胆脂瘤位于上鼓室前外壁,造成听骨链向内移位,骨质破坏以锤骨和鼓室盾板为主;③紧张部胆脂瘤位于鼓室下后壁,造成听骨链向外侧移位,骨质破坏以砧骨长脚和鼓室窦为主。
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关 键 词: | 各向同性 获得性中耳小胆脂瘤 体层摄影术,X线计算机 高分辨 |
HRCT findings of acquired small cholesteatoma in the middle ear of early stage |
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Affiliation: | LIU Kai, NIU Xuecai, CHENG Dongfeng, et al( Shandong Medical Imaging Research Institute,Jinan,250021 ,China) |
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Abstract: | Objective: To study the HRCT findings of acquired small cholesteatoma in the middle ear by the ways of isotrophic scan. Methods: Thirty-nine cases of acquired small cholesteatoma in the middle ear were analyzed retrospectively. All the cases were processed by isotrophic scan and displayed MPR technique. Results: HRCT findings of acquired small cholesteatoma were classified into three types:4 cases of tympanic retraction pockets,27 cases of flaccid part cholesteatomas, 8 cases of tense part cholesteatomas. Conclusion: (1) Retraction pockets appeared as airregulua rim aerated cavities, which were the findings before solid eholesteatomas;(2) Flaccid part cholesteatomas were located in the anterior-lateral wall in epitympanum,which caused ossicular chains displace internally. Bone destructions mainly located in malleus and scutum;(3) Tense part cholesteatornas were lo cared in posterior-inferior wall, which caused ossicular chains displace laterally,bone destructions mainly located in long process of incus and tympanic sinus. |
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Keywords: | Isotrophie scan Acquired small cholesteatoma in the middle ear HRCT |
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