颅中 窝进路，可暴露内 耳 道段和迷路段；
The nest in skull takes a route, can expose inner ear to paragraph with inner ear paragraph;
结果：8.3%面神经迷路段和膝状神经节骨管型缺如，面神经裂孔到膝神经节的距离变异较大。
Result: It is demonstrated that 8.3 % geniculate ganglion and labyrinth segment of facial nerve Variation which distance from hiatus of facial nerve to geniculate ganglion is distinct.
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