BACKGROUND: Ureter obstruction is one of the common complications after renal transplantation, and it can influence glomerular filtration and tubular reabsorption and damage renal function.

• 摘要背景：输尿管梗阻是肾移植后常见的并发症之一，影响肾小球滤过和肾小管的重吸收，损害肾功能。