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当前学科：心胸外科
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男性，35岁。刺激性咳嗽并痰中带血丝6个月。X线胸片示左肺中央型块影，左肺上叶不张，左胸腔中量积液，右纵隔阴影增宽，轮廓呈波浪形。右侧的病变应考虑是肺癌的（）
A . 交叉转移
B . 直接扩散
C . 细胞脱落种植
D . 经肺循环血行转移
E . 经体循环血行转移
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