What about the failed kidneys ? (Or) Write about the failure of kidneys.

Explanation

1) In most cases the old kidneys will not be removed.
2) This is because even failed kidneys release chemicals that help the body work.
3) However if those kidneys have a disease that cause on going problems such as persistent kidney infections or intestinal blockage, then the transplanting would be considered removing the old kidney .
4) The two most common medical conditions requiring "native nephrectomy" or "congenital reflux" disease and polycystic disease.