Definition

The tumor was completely removed by surgery and no cancer cells were found at the edges of the area where the tumor was removed. Cancer has not spread to lymph nodes. Before the tumor was removed, one of the following was true: (1) cancer had spread to the renal sinus (the part of the kidney where it joins the ureter); or (2) cancer had spread to blood vessels outside the area of the kidney where urine is made, such as the renal sinus.