颅内脊索瘤与鼻咽癌的MRI诊断及鉴别诊断  

MRI Diagnosis and Differential Diagnosis of Intracranial Chordoma and Nasopharyngeal Carcinoma

作　　者：张伟[1] 黄祖平[1] 谭长连[2] 罗良贤[1] 刘旋辉[1] 

机构地区：[1]湖南省脑科医院放射科,湖南长沙410007 [2]中南大学湘雅附二医院放射科

出　　处：《实用放射学杂志》2005年第12期1243-1245,共3页Journal of Practical Radiology

摘　　要：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 evaluate the value of MRI in the diagnosis of intracranial chordoma and nasopharyngeal carcinoma. Methods MRI findings of 8 chordomas and 23 nasopharyngeal carcinomas confirmed pathologyically were retrospectively analysed. Results The central position of chordomas in 7 cases was located in the midle pant of the clivus/the saddle aera of the base of the cranium, the tumor was mainly in base of cranium and extends encephalicly , the occipital clivus and sphenoid body were destroied widly with sharp borderline . Chordoma was obvious differential from carcinoma, the later was primary growth in the nasopharynx and then spreaded to encephalic. The blood supply intracranial ehordoma and carcinoma is difference , so that they were obvious differential on contrast - enhanced scan . Conclusion MRIisaeffective method in diagnosis ofintracranialchordoma and nasopharyngealcarcinomaand have important valueindiagnosisand distinguish diagnosis.

关 键 词：磁共振成像 颅内脊索瘤 鼻咽癌 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.41[医药卫生—诊断学]