1. On intravenous urogram the ureterocele usually showed a positive cobra-head dilatation.
   静脉注入泌尿系可见其影像，与“眼镜蛇头”相类似。
2. Perioperative serum creatinine, electrolytes, blood gas, and a follow-up excretory urogram, cystogram, and pathological examination were used to assess the surgical outcome.
   手术前后的血清肌酸酐、电解质、动脉血气体分析以及追踪时取得肾盂摄影、膀胱摄影、病理检查来评估手术的结果。

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