urinary fistula

例句：

1. 1. The patient's urinarysymptoms have improved significantly since the treatment began.
   自治疗开始以来，患者的尿症状已经显著改善。
2. 2. The urologist isresponsible for monitoring the patient's urinary health.
   泌尿科医生负责监测患者的泌尿健康。
3. 3. Urinary tractinfections are a common cause of lower backpain.
   尿路感染是导致下背部疼痛的常见原因。