：患者，61岁男性出现进行性的下肢无力。61-year-oldmalewithprogressivelowerextremityweakness
MRI图像
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61-year-oldmalewithamultilevelintraduralextramedullarylesiondemonstratingisointensityonsagittalT1(Figure1),intenseenhancementonsagittalT1postgad(Figure2)andsagittalT1postgadfatsat(Figure3),andhighsignalintensityonsagSTIR(Figure4)(redarrows).61岁男性伴有连续多个椎体平面的髓外硬膜下病变，T1`序列呈等信号（图1），T1增强扫描（图2）和T1压脂增强扫描（图3）显示病变明显强化，STir序列显示病变呈高信号（图4）
AxialT1precontrast(Figure5)postcontrast(Figure6)andpostcontrastwithfatsaturation(Figure7)demonstrateanintraduralextramedullarylesion
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