Pelvic ectopic solitary kidney: treatment with the application of three-dimensional computed tomography and laparoscopic pyeloplasty—a case report

Yuanshan Cui, Yupeng Cui, Yong Zhang


Renal ectopia occurs in 1:3,000–1:7,000 children. Simple ectopia refers to the abnormal kidney location on the same side; in crossed ectopia the ureter crosses the midline of the body. Pelvic ectopic solitary kidney with hydronephrosis due to ureteropelvic junction obstruction (UPJO) is even rarer in clinical practice. We report a case of a pelvic ectopic solitary kidney with hydronephrosis due to UPJO in an 18-year-old girl. Three-dimensional computed tomography (CT) scan showed the Single Ectopic Kidney with irregular shape lying in the pelvis and its cortex is very thin because of the grossly dilated renal pelvis and ureter. The terminal ureteral joined the right posterior wall of bladder. The renal artery originated from the bilateral common iliac artery, and laparoscopic pyeloplasty was performed. 18 months after the surgery, hydronephrosis was improved morphologically, and the estimated glomerular filtration rate was stable.