目的：探讨鞍结节脑膜瘤的磁共振成像（magnetic resonance imaging，MRI）影像学特征及其诊断价值。
方法：回顾性分析1995年1月—2015年12月经术后病理证实的59例鞍结节脑膜瘤患者的术前MRI影像学特征。
结果：59例鞍结节脑膜瘤患者中，男性15例，女性44例。所有59例鞍结节脑膜瘤的基底均位于鞍结节或鞍隔的硬膜；MRI平扫T1加权像（weighted image，WI）均呈等信号或略低信号，T2WI均呈等信号或略高信号；57例鞍结节脑膜瘤的MRI增强扫描图像呈明显的均匀强化，2例呈不均匀强化；45例可见“脑膜尾征”。
结论：MRI检查在鞍结节脑膜瘤的定位和定性诊断中显示出明显的优势，可以为手术方式的选择、肿瘤切除程度的评估以及手术风险的预测提供重要指导。
Abstract
Objective: To evaluate the features and diagnostic value of magnetic resonance imaging (MRI) for tuberculum sellae meningioma.
Methods: Presurgical MRI features of 59 patients with histopathologically identified tuberculum sellae meningioma between January 1995 and December 2015 were analyzed retrospectively.
Results: Fifty-nine patients including 15 males and 44 females were evaluated. The bases of the tumors were all located around the tuberculum sellae or diaphragmasellae. On MRI T1-weighted image (T1WI), all tumors showed slightly iso- or hypo-intense and iso- or hyper-intense on T2WI. Obvious homogenous enhancement of tumor on enhanced scanning images of MRI was seen in 57 cases, and the remaining 2 cases showed uneven enhancement. The dural tail sign on enhanced scanning images was observed in 45 cases.
Conclusion: MRI examination plays an important role in qualitative diagnosis and localization of tuberculum sellae meningioma, providing a valuable guide for selection of surgical approach, evaluation of the extent of tumor resection, and the prediction of operation risks.
关键词
脑膜瘤 /
鞍结节脑膜瘤 /
磁共振成像 /
诊断
Key words
Meningioma /
Tuberculum sellae meningioma /
Magnetic resonance imaging /
Diagnosis
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