Kidney, Absence of One

An athlete without a paired organ, such as a testis or a kidney, should be evaluated for participation in sports. A single kidney may be present congenitally or may be the result of surgical removal of the other kidney due to disease or trauma. It is estimated that 1 in 2,400 people are born with a single kidney.


The kidneys serve as a filter for the body to remove excess water and waste products from the blood. The kidneys lie in the abdomen, near the middle of the back, and are protected by ...

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