Kidney CancerThe kidneys are a pair of organs at the back of the abdomen that filter the blood to remove waste products which they convert into urine. This urine is carried from the kidneys to the bladder by tubes called the ureters. 
When the bladder is full the urine then passes out of the body through a tube called the urethra. The urethra opens immediately in front of the vagina in women and at the tip of the penis in men. |