Polycystic kidney disease

The kidneys comprise a pair of organs, commonly about five inches long and three inches wide, located at the back of the abdominal cavity on either side of the spine. The left kidney is slightly higher and larger than its counterpart. Their primary function is to filter blood. Blood travels into the kidneys via the renal artery, waste is excreted from it and then returns to the bloodstream; the waste and any excess water travel to the bladder as urine. Additionally, the kidneys balance bodily fluid content, adjust the level of minerals and chemicals, produce an enzyme called rennin - whi...