Nakasu Y, Takeichi Y, Nakasu S, Handa J
Department of Neurosurgery, Shiga University of Medical Science.
Nihon Geka Hokan. 1991 Sep 1;60(5):368-74.
A patient with a diploic meningioma is presented. Computed tomography (CT) scan revealed an intradiploic tumor which seemed contiguous at a point to a contralateral, recurrent parasagittal meningioma. On CT, density of the diploic meningioma was similar to that of the parasagittal meningioma, but the contrast study showed that the former enhanced much less than the latter. Magnetic resonance (MR) imaging demonstrated that the diploic tumor was heterogeneous and much less enhanced with Gadolinium-DTPA (Gd-DTPA) than the parasagittal meningioma on T1-weighted image, although they were very similar in signal intensities on T2-weighted and proton density-weighted MR images without Gd-DTPA. Reasons for such marked differences in enhancement patterns are discussed.
本文报告一例板障型脑膜瘤患者。计算机断层扫描（CT）显示板障内肿瘤，在某一点似乎与对侧复发性矢状窦旁脑膜瘤相连。在CT上，板障型脑膜瘤的密度与矢状窦旁脑膜瘤相似，但增强扫描显示前者的强化程度远低于后者。磁共振（MR）成像显示，板障内肿瘤不均匀，在T1加权图像上，与矢状窦旁脑膜瘤相比，钆喷酸葡胺（Gd-DTPA）增强明显减弱，尽管在未使用Gd-DTPA的T2加权和质子密度加权MR图像上，它们的信号强度非常相似。文中讨论了强化模式存在如此显著差异的原因。
