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当前学科：泌尿外科学
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女性，57岁。无痛性血尿4个月。体格检查无阳性体征。B超检查：右肾轻度积水，尿脱落细胞检查3次，未发现癌细胞。根据患者情况，目前首先要做的检查是（）
A . B超检查和X线胸片检查
B . 尿路X线平片和排泄性尿路造影
C . 膀胱镜检查
D . 膀胱造影
E . 重复尿细胞学检查
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