—Headings and Palmer1 report a case of supernumerary kidney with the ureter opening into the vagina in a 24 year old white woman, whose chief complaint was dribbling from the vagina. This makes a total of 44 such cases which have been reported in the literature. In this case successful surgical removal of the small supernumerary kidney with its ureter resulted in eradication of the patient's complaint of dribbling from the vagina.Carlson2 states that most supernumerary kidneys are located below the normal kidney and are generally smaller than the normally placed kidney. The ureters show considerable variation. Usually the ureters of the supernumerary and normal kidneys fuse before entering the bladder. Complete reduplication may be present. Ectopic ureteral orifices have also occurred, commonly with openings into the vagina or prostatic urethra. Openings into vaginal cysts or into a blind sac have also been found.
SCHOLL AJ, HINMAN F, HEPLER AB, GUTIERREZ R, THOMPSON GJ, COOK EN, FLYNN JF, O'CONOR VJ. REVIEW OF UROLOGIC SURGERY. Arch Surg. 1947;55(3):349-386. doi:10.1001/archsurg.1947.01230080355011