题目内容

患者女性，26岁。因不明原因发热2周就诊，既往史：风心病史4年，查体：T 38.6℃，心尖区Ⅲ级收缩期杂音，双肺听诊无异常。足底见2个紫红色结节，有压痛。下列可确诊为感染性心内膜炎的特征是

A. 持续性血培养阳性，伴有新出现的反流性杂音
B. 持续性血培养阳性，具有心脏易患因素伴血管现象
C. 阴性或间歇性阳性血培养，伴有发热，新出现的反流性杂音及血管现象
D. 持续性阳性血培养伴血管现象
E. 持续性阳性血培养，具有心脏易患因素
F. 非心脏外原因所致的草绿色链球菌阳性血培养至少两次，并伴发热

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患者男性，58岁。不发热，干咳，痰中带血丝1个月，昨天X线检查示右侧有大量的胸腔积液。病人否认心脏病史。该病人引起胸腔积液的可能原因包括

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B. 原发性肺癌
C. 胸膜间皮瘤
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