Figure 7: Axial image from CT cisternogram demonstrates intrathecal contrast leaking into the expanded right sphenoid sinus along the septum (orange arrow).
图7：轴位CT脑池造影显示硬膜下造影剂沿着中隔渗漏到扩张的右侧蝶窦腔内。
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Figure 2: T2-weighted axial image once again demonstrates a large, heterogeneous lesion located in the ethmoidal sinus (arrow). The lesion is predominately isointense to grey matter.
图2：T2序列轴位影像再次显示一个大的不均匀病变，位于筛窦（箭头）。病变的信号类似于灰质。
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Figure 2: Axial T2 image through the level of the sacrum demonstrates an isointense lesion originating in the right sacral ala which is invading the S1 and S2 exiting nerve roots. (double red arrows).