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【单选题】
患者，男，35岁，长期从事文字工作，昨日弯腰取物时，突感腰部疼痛，放射到左臀部。查体：腰3～4左椎旁及腰有横突压痛明显，放射到臀部，腹部垫枕试验(-)，腿抬高试验(+)，加强(-)，应诊断为：
A.
腰椎管狭窄症
B.
急性腰椎间盘突出
C.
腰椎滑脱
D.
腰椎管内肿瘤
E.
急性腰扭伤
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