男性，66岁。5个月前起刺激性干咳，右上胸痛，呈进行性加重就诊。近2周来疼痛沿右肩向右上臂及前臂放射，并出现右额部不出汗、右眼难以睁开。体检：右侧瞳孔缩小，眼球内凹上睑下垂。右上肺叩浊，呼吸音降低。余肺清，心脏无阳性发现。X线示右肺尖团块影，边缘不清。患者右臂疼痛原因是（）._呼吸内科学_全学科试题题库

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男性，66岁。5个月前起刺激性干咳，右上胸痛，呈进行性加重就诊。近2周来疼痛沿右肩向右上臂及前臂放射，并出现右额部不出汗、右眼难以睁开。体检：右侧瞳孔缩小，眼球内凹上睑下垂。右上肺叩浊，呼吸音降低。余肺清，心脏无阳性发现。X线示右肺尖团块影，边缘不清。患者右臂疼痛原因是（）.
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