The ectopic meningioma on skull base has less blood supply than intradural meningioma, and less hemorrhage, so the artery does not need to be ligated or embolized during the operation.
颅底异位脑膜瘤较硬脑膜内者血运差，手术中出血量不多，一般不需动脉结扎或动脉栓塞。
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