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The key technique of the operation is to separate the blood vessels and cranial nerves carefully from the tumor along the arachnoid. 顯微鏡下嚴(yán)格沿腫瘤與周圍血管及神經(jīng)的蛛網(wǎng)膜界面分離是術(shù)中關(guān)鍵技術(shù)；