The dura has been reflected back (with a small portion visible at the lower right) to reveal a subdural hematoma. Such a blood clot is usually the result of trauma with tearing of the bridging veins.
硬脑膜折起（右下可见小部分硬脑膜）显示硬膜下血肿。这种血块通常是桥静脉撕裂造成的。
A blood clot is seen over the external surface of the dura. Thus, this is an epidural hematoma.
硬脑膜外表面可见一血块，此为硬膜外血肿。
A blood clot is seen over the external surface of the dura. Thus, this is an epidural hematoma.
硬脑膜外表面可见一血块，此为硬膜外血肿。
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