Most childhood brain tumors arise below the tentorium , which is the reverse of the adult 绝大多数儿童脑肿瘤都发生在小脑幕下，这一点与成人相反。
2.
On this slice two venous structures related to the tentorium cerebelli are seen to be filled with contrast 在这个层面，可以看见被造影剂填充的与小脑幕相关的两个静脉结构。
3.
Swelling of the left cerebral hemisphere has produced a shift with herniation of the uncus of the hippocampus through the tentorium , leading to the groove seen at the white arrow 左大脑半球肿胀通过小脑幕形成海马钩回疝和正中线偏移，从而出现此处白色箭头所示的沟。
