Wilms Tumor and Other Childhood Kidney Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] - Stages of Wilms Tumor
In stage II, the tumor was completely removed by surgery and no cancer cells were found at the edges of the area where the cancer was removed. Cancer has not spread to lymph nodes. Before the tumor was removed, one of the following was true:
- Cancer had spread to the renal sinus (the part of the kidney where it joins the ureter).
- Cancer had spread to blood vessels outside the area of the kidney where urine is made, such as the renal sinus.
In stage III, cancer remains in the abdomen after surgery and one of the following may be true:
- Cancer has spread to lymph nodes in the abdomen or pelvis (the part of the body between the hips).
- Cancer has spread to or through the surface of the peritoneum (the layer of tissue that lines the abdominal cavity and covers most organs in the abdomen).
- A biopsy of the tumor was done before it was removed.
- The tumor broke open before or during surgery to remove it.
- The tumor was removed in more than one piece.
- Cancer cells are found at the edges of the area where the tumor was removed.
- The entire tumor could not be removed because important organs or tissues in the body would be damaged.
In stage IV, cancer has spread through the blood to organs such as the lungs, liver, bone, or brain, or to lymph nodes outside of the abdomen and pelvis.
In stage V, cancer cells are found in both kidneys when the disease is first diagnosed.
The treatment of other childhood kidney tumors depends on the tumor type.