【摘要】 目的 探讨MRI诊断斜坡肿瘤的价值。 材料与方法 回顾性分析35例经病理证实的斜坡肿瘤的MRI表现，其中20例作增强扫描，观察各种病变的信号强度、大小、侵犯范围，并与CT表现进行比较。 结果 斜坡肿瘤在MRI上表现为正常斜坡被肿瘤组织所替代，信号不均匀，呈不均一强化；原发性肿瘤呈膨胀性生长，继发肿瘤多呈浸润性改变。MRI显示斜坡肿瘤明显优于CT扫描。 结论 MRI能很好地显示斜坡肿瘤的大小、形态及其侵犯范围，有利于肿瘤的诊断。

MRI Evaluation ofthe Clivus Tumors

WANG Dong，ZHANG Wanshi，XIONGMinghui

    (Department of MRI, Air Force General Hospital, Beijing 100036, P.R.China)

【Abstract】 Objective Toevaluate MRI in the diagnosing of clivus tumors. Materials and Methods MRI features ofclivus tumor in 35 pathologically-proved patients were retrospectively analyzed. Contrastenhanced scanning was performed in 20 cases. The signal intensity, size and extension oftumors were observed, and a comparison between the diagnostic abilities of MRI and CT wasmade. Results On MRI, the normal clivus was replaced by tumor tissue showing asinhomogeneous signal intensity and exhibiting heterogeneous enhancement. The primaryclivus tumor demonstrated expansive growth, while the secondary tumor displayed invasiveextension. MRI was significantly superior to CT in demonstrating the clivus tumor. Conclusion MRIcan well demonstrate the size, shape and extension of the clivus tumor, and therefore, itis very useful in evaluating clivus tumor.

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