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目的探讨颅内脊索瘤和鼻咽癌的MRI诊断及鉴别诊断,评价MRI诊断价值。方法回顾性分析经病理证实的8例脊索瘤、23例鼻咽癌的MRI表现。结果7例脊索瘤中心部位在颅底中线处的斜坡/鞍区,肿瘤以颅底为主,主要向颅内蔓延,广泛破坏枕骨斜坡或蝶骨体,呈边界清楚、范围较大的骨质缺损;与鼻咽部生长为主再向颅内侵犯的鼻咽癌不同。颅内脊索瘤和鼻咽癌因血供不同,强化亦有较明显区别。结论MRI是诊断颅内脊索瘤和鼻咽癌的很有效的检查方法,具有重要的诊断和鉴别诊断价值。
Objective To investigate MRI diagnosis and differential diagnosis of intracranial chordoma and nasopharyngeal carcinoma and evaluate the diagnostic value of MRI. Methods Retrospective analysis of pathologically confirmed 8 cases of chordoma, 23 cases of nasopharyngeal carcinoma MRI findings. Results The center of chordoma in the center of skull base was the slope / saddle area at the midline of skull base. The tumor was mainly skull base and mainly spread to the skull. The occipital slope or sphenoid body was extensively destroyed, with a clear boundary and a large range of bone Defects; and nasopharyngeal growth and then to the different intracranial invasion of nasopharyngeal carcinoma. Intracranial chordoma and nasopharyngeal carcinoma due to different blood supply, there is also a more significant difference between enhancement. Conclusion MRI is a very effective method for the diagnosis of intracranial chordoma and nasopharyngeal carcinoma. It has important diagnostic and differential diagnostic value.