An ultrasound performed at the referring hospital showed mild hydronephrosis in the right kidney and absent left kidney ... laparoscopic pyeloplasty was scheduled as an urgent elective procedure.

A UPJ obstruction can be defined as a restriction to the flow of urine from the renal pelvis to the ureter that, if left uncorrected ... multicystic dysplastic kidney and horseshoe kidney.

5 years after pyeloplasty, her renal function was normal ... CT of the abdomen revealed fluid collection around the lower pole of the left kidney, but normal renal parenchyma (Figure 2).