| 刘辉,梁长虹,黄飚,刘其顺,周正根,刘红军.CT、MRI术前评价原发性中耳癌[J].中国医学影像技术,2005,21(7):1013~1015 |
| CT、MRI术前评价原发性中耳癌 |
| CT and MRI in the preoperative evaluation of primary middle ear carcinoma |
| 投稿时间：2005-03-15 修订日期：2005-05-08 |
| DOI： |
| 中文关键词: 中耳 肿瘤 体层摄影术,X线计算机 磁共振成像 |
| 英文关键词:Ear, middle Neoplasms Tomography, X-ray computed Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 分析中耳癌的CT、MRI表现,探讨中耳癌侵犯重要解剖结构的影像特点。方法 8例经手术病理证实的原发性中耳癌术前接受高分辨率CT扫描,其中4例同时行增强CT扫描,3例同时行MRI检查。结果 8例中耳癌于高分辨率CT上均表现为中耳内软组织肿块伴不规则骨破坏,且均无硬化边。4例增强CT扫描软组织肿块有中等程度强化。高分辨率CT准确显示了3例颈动脉骨管破坏,4例颈静脉球或乙状窦受到累及,5例面神经骨管破坏。3例MRI均清晰显示肿瘤对硬脑膜和颞骨外软组织的侵犯。结论 根据高分辨率CT及增强CT特点可以正确诊断原发性中耳癌。高分辨率CT可以精确描述中耳癌对颞骨内重要解剖结构的侵犯;MRI对于硬脑膜及颞骨外软组织侵犯的显示更有优势。 |
| 英文摘要: |
| Objective To analyze the CT and MRI manifestation of middle ear carcinoma,and to discuss the characteristic manifestation of tumor encroaching the important anatomic structures. Methods All 8 cases (6 male, 2 female, aged 38-74, mean 55 years old) of middle ear carcinoma confirmed by operation underwent high-resolution CT (HRCT),in which 4 cases also performed enhanced CT scanning, 3 cases had MRI scanning. Results Soft tissue tumors with irregular bone destruction were found in all cases, the edge of the involved bone were indistinct. Four cases of soft tissue tumor manifested moderate enhancement. HRCT correctly depicted destruction of carotid artery canal in 3 cases, erosion of jugular foramen in 4 cases and facial nerve canal in 5 cases. MRI clearly showed the dural and soft tissue out of temporal bone invasion in all 3 cases. Conclusion HRCT and enhanced CT scanning can correctly diagnosis primary middle ear carcinoma according to the characteristic manifestations. HRCT precisely depicts the invasion of the important anatomic structures in the temporal bone and provides guidelines for operation, while MRI shows more advantage in evaluation of the dural and soft tissue invasion. |
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