|MadSci Network: Medicine|
A double ureter means that a kidney is drained by two different ureters instead of just one. The ureter is the tube that connects kidneys to the bladder. With a double ureter, usually one ureter drains the top of the kidney and another one drains the bottom part of the kidney. The area of the kidney that collects the urine and where the ureter connects to the kidney is called the pelvis. People with a double ureter will also have a double pelvis (one for each kidney). This won't change the formation of urine at all. The difference is that instead of all the urine from a kidney going down one ureter, some of the urine goes down one ureter and some of the urine goes down the other. The same amount of urine produced would be the same. Because the bladded still stores the urine, there will be no changes at all in urination. There are two exceptions, though: 1) People with double ureters are prone to get urinary tract infections. These infections can increase the need to urinate when the infections are active and can damage the kidneys (both the one with the double ureter and the normal one). For this reason, people who are known to have double ureters will often be followed by urologists. 2) People with double ureters can have other anatomical anomolies. THese anomolies can affect the kidneys, bladder or other parts of the body (or there might not be any other anomolies at all). Additional information about double ureters can be found at: http://www.emedicine.com/radio/topic226.htm http://www.merck.com/mrkshared/mmanual/section19/chapter261/261j.jsp I hope this answers your question. Thanks.
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