后颅窝扩张伴有横窦、窦汇和小脑幕上移。
Enlargement of posterior fossa with upward displacement of lateral sinuses, sinus confluens and tentorium.
应用内窥镜研究窦腔内纤维索结构、蛛网膜颗粒及窦汇区的原始结构特征；
Endoscopes were inserted into the lumen of the sinus to observe the structures of chordae.
结果实验所收集的数据表明在定位横窦下缘和窦汇时，上项线及枕外隆凸尖不是一个可靠的浅表解剖学标志。
Results The data of this study showed that the superior nuchal line and inion is not always a reliable external anatomical mark to locate the transverse sinus and torcular herophili.
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