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Figure 1: Radiological images of antegrade pyelography done on post-operative day 10 after left-sided Anderson-Hynes dismembered pyeloplasty. (a) 1-Pyelotubular or pyelocanalicular backflow. 2-Pyelointerstitial backflow. 3-Pyelosinusal backflow. 4-Pyelolymphatic backflow. (b) 5-Contrast visualized in the pelvis of the contralateral kidney due to pyelovenous backflow. 6-Excretion of contrast into the urinary bladder

Figure 1: Radiological images of antegrade pyelography done on post-operative day 10 after left-sided Anderson-Hynes dismembered pyeloplasty. (a) 1-Pyelotubular or pyelocanalicular backflow. 2-Pyelointerstitial backflow. 3-Pyelosinusal backflow. 4-Pyelolymphatic backflow. (b) 5-Contrast visualized in the pelvis of the contralateral kidney due to pyelovenous backflow. 6-Excretion of contrast into the urinary bladder