Lung cancer advanced stage can drink water much, how to do without urinating

If the patient has normal renal function, there is no need to control the amount of water. There is no urine at present. It may be caused by renal failure or decreased circulating blood volume. You need to go to the hospital for renal function examination, blood routine examination, bladder wall B-ultrasound examination to confirm the cause of anuria, and treat the cause.