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当前学科:皮肤科住院医师
题目:
单选题
女性,43岁,乏力半年,伴间断低热,近3周自觉吞咽困难,化验ANA阴性,CK及LDH明显升高,可能的诊断是()
A
食管贲门失弛缓
B
多发性肌炎
C
系统性红斑狼疮
D
食管肿瘤
E
重症肌无力
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