The urinary system, which includes the kidneys, bladder, and ureters, empties wastes out of the body through urine. Urine travels from the kidneys through two thin tubes called the ureters into the bladder and then out of the body.

A blockage in the urinary system can happen in children, or even in babies still developing in the womb. This can cause bladder, kidney, and lung problems. The doctor can use test called an ultrasound to see blockages in the system. Sometimes a blockage will go away on its own and other times surgery is needed.

Urine reflux happens when the valve, or doorway, between the bladder and a ureter is not working and does not completely shut. In certain cases, antibiotics may help solve urine reflux, but sometimes surgery is needed.

Blockages and reflux in the urinary system can make urine build up in the kidneys and cause permanent kidney damage or kidney failure.

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