Stage V Cancer cells are found in both kidneys. It may come back where it started or in another part of the body. How Wilms' tumor is treated There are treatments for all patients with Wilms' tumor. Surgery is a common treatment for Wilms' tumor. This operation is usually used only in special cases, such as when the other kidney is damaged or has already been removed.
Simple nephrectomy removes the whole kidney.
The kidney on the other side of the body can take over filtering blood. Radical nephrectomy removes the whole kidney with the tissues around it. Some lymph nodes in the area may also be removed. Chemotherapy uses drugs to kill cancer cells. Chemotherapy may be taken by pill, or it may be put into the body by a needle in a vein or muscle.