1. It is evident that the absence of post void residual urne does not rule out BOO.
   提示膀胱出口梗阻与剩余尿并非简单的因果关系。
2. Methods Collect the urne from 13 patients with vulval cancer before and after treatment respectively, do the urine routine test and compare the results.
   分别作了13例外阴癌患者治疗前后的小便常规检查，并比较它们的结果。

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