Abstract: Purpose: The causes of misdiagnosis of three cases of duplication of kidney and ureter complicated with hydronephrosis of the upper kidney were analysed so as to provide the measures to diagnose atypical renal or adrenal cysts.

• 文摘:目的：分析重肾双输尿管并发上位肾积水误诊原因，探讨临床不典型肾囊肿、上腺囊肿的诊断方法。