There are two ureters originating from bilateral both kidneys. On the right, the two ureters appear to join at the level of the sacrum. The conjoined ureters then insert ectopically at the medial and inferior aspect of the bladder. The two left ureters remain separate throughout their course. On the left, the ureter arising from the upper pole inserts ectopically on the medial and inferior bladder, whereas the ureter originating from the lower pole inserts lateral and more superior, Both medially inserted ureters are associated with a ureterocele.