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Wilms Tumor with Favorable Histology

To assign a stage to your child's tumor your doctor will use the information from imaging studies, and the observations by the surgeons when the tumor was removed.

The criteria your doctor uses to assign the stage of your child's tumor was developed by the Renal Tumor Committee of the Children's Oncology Group. The criteria have changed over the years and the current criteria is listed here. Treatments are specific to the stage of tumor that a child has. Clicking on the stage of your child's tumor will allow you to read about the specific treatment for him/her. If you're unsure as to which stage of tumor your child has, ask your child's doctor.

• Stage I: The tumor is present only in the kidney and has been completely removed.
• Stage II: The tumor had grown past the kidneys to nearby areas but was completely removed.
• Stage III: The tumor could not be completely removed by the surgeon at diagnosis, or the tumor was biopsied prior to removal.
• Stage IV: The tumor has spread through the bloodstream to the lungs, liver, bone, lymph nodes or brain.
• Stage V: The tumor is present in both kidneys at the time of diagnosis.