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某患者经影象学检查确诊为左肾癌，近半个月来出现左侧阴囊内精索静脉曲张，且平卧不消失，最可能的原因是：

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某患者经影象学检查确诊为左肾癌，近半个月来出现左侧阴囊内精索静脉曲张，且平卧不消失，最可能的原因是：

A.肾静脉内癌栓

B.肾动脉内癌栓

C.下腔静脉内癌栓

D.肿瘤外在压迫精索内静脉

E.原发性精索静脉曲张

参考答案:

答案：A

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