—Hepler1 reports a case of a girl, 5 years old, who had bilateral duplication of the renal pelves and ureters, with hydronephrotic destruction of both halves of the right kidney and the upper half of the left. The ureter from the latter opened into the uterine cervix.The embryonic features of this rare anomaly are discussed, particularly in relation to the disputed true vaginal and uterine ectopic ureteral openings.The diagnostic problems and the difficulty of roentgenographic demonstration of the anomalous renal segments and ureters, when the former are practically functionless, are demonstrated.After right nephroureterectomy was done, the incontinence was cured by complete removal of the ureter to the anomalous segment of the left kidney.Bacon2 states that a supernumerary kidney is the rarest congenital renal anomaly. The abnormality must be clearly differentiated from double or fused kidneys, in that the accessory third organ is
SCHOLL AJ, HINMAN F, HEPLER AB, et al. REVIEW OF UROLOGIC SURGERY. Arch Surg. 1948;56(3):401–442. doi:10.1001/archsurg.1948.01240010408010
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