General Information Two bean shaped organs four and a half inches long situated against the posterior abdominal wall, one on each side of the vertebral column Cancer of the The kidneys produce and eliminate urine through a complex filtration network and reabsorption system comprising more than two million nephrons The kidneys remove water or urine and return water that has been filtered to the blood plasma, thus maintaining the water balance of the body Having only one kidney does not create a medical problem Hormones produced by the pituitary gland control the function of the kidneys in regulating water content Constitutes approximately 4% of all cancers Affects three times as many males as females Of tumors arise in the parenchyma and are commonly called renal cell cancers Affect men in age group 40 to 75 Year survival rate for patients with early stage cancer up to seventy-five percen