If only one kidney could be detected by ultrosonography,CTU should be performed to differentiate renal hypoplasia from solitary kidney.

• 结论 如疑有肾发育不良或经超声初步检查仅发现一个肾 ,应行CTU检查 ,以明确是否为单侧肾发育不良。 CTU是目前诊断肾发育不良最准确的非创伤性影像检查方法