Abstract
A few cases of human renal arterial and venous anomalies (accessory renal artery and accessory renal vein) were found during an anatomical dissection course for co-medical students, which indicated supernumerary renal arteries in both sides of 3 cases and a retroaortic renal vein in 1 case. The former supplied branchings in the 5 segments (4 segments in front of the renal pelvis and 1 behind it) from outside of the kidney according to Graves (1971) . The retroaortic left renal vein coursed dorsal to the abdominal aorta and drained into the 3rd and 4th lumbar veins.
At the same time, double ureters were observed at the right side of 1 case. The superior ureter meant a vestige of the mesonephric duct, while the inferior was a true ureter. One renal arterial segment appeared to increase in this side.
