封闭的颅腔内急性脑肿胀是非常危险的。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。
Acute brain swelling in the closed cranial cavity is serious. 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.