Results 10 intramedullary(28 6%),15 intradural extramedullary(42 9%) ,8 intradural(22 9%) and 2 intra-extradural tumors(5 7%) were diagnosed respectively by CTM and CT.

• 结果 CTM、CT诊断髓内肿瘤 10例 (占 2 8 6%25 ) ,髓外硬膜内肿瘤 15例 (占 42 9%25 ) ,硬膜外肿瘤 8例 (占 2 2 9%25 ) ,硬膜内外肿瘤 2例 (占 5 7%25 )。