| Text | 根据描述选诊断 A.室管膜瘤 B.脊膜瘤 C.脊索瘤 D.转移瘤 E.淋巴瘤 1.脊髓呈梭形膨大,蛛网膜下腔对称性狭窄,当肿瘤较大时可造成蛛网膜下腔完全阻塞,显示肿瘤以上蛛网膜下腔呈大杯口征,首先考虑( ·2.脊髓受压移位,患侧蛛网膜下腔增宽,首先考虑( |
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