摘要
目的探讨高分辨CT(HRCT)对慢性化脓性中耳炎(胆脂瘤型)的诊断价值。方法对238例经手术及病理证实的中耳胆脂瘤的CT征象与手术所见进行对照研究。结果(1)CT诊断胆脂瘤的敏感性最高在上鼓室(81.25%),最低在乳突(50%)。(2)CT显示胆脂瘤的病理改变为①鼓室乳突腔内胆脂瘤影;②胆脂瘤周低密度环;③鼓室乳突腔边缘骨质硬化;④鼓室乳突腔扩大;⑤听骨链破坏。结论CT检查对于中耳胆脂瘤的诊断及指导手术有很大帮助。
Objective To explore the diagnostic effectiveness of HRCT in middle ear cholesteatoma. Methods To compare the findings on CT scan and during operation in 238 cases with middle ear cholesteatoma proved by mastoidotympanectomy and post-operation pathological examination. Results (1) Sensitivity of CT diagnosis is the highest for attic cholesteatoma(81.25%) and the lowest for mastoid cholesteatoma (50%); (2) The radiological features on the CT scan were: ① a tissue mass (cholesteatoma) in the tympanic and mastoid cavity; ② a low density ring around the mass; ③ sclerosing of the bony borders of the tympanic sinus and mastoid cavity; ④ enlargment of the tympanic and mastoid cavity;⑤ destruction of the auditoy ossicle chain. Conclusions CT scan is helpful in the assessment of and planning the management for the middle ear cholesteatoma before surgery.
出处
《中华耳科学杂志》
CSCD
2005年第2期107-109,共3页
Chinese Journal of Otology
