Wilms Tumor

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Early Detection, Diagnosis, and Staging TOPICS

Survival rates for Wilms tumor by stage and histology

Survival rates are often used by doctors as a standard way of discussing a person’s prognosis (outlook). Some parents may want to know the survival statistics for children in similar situations, while others may not find the numbers helpful, or may even not want to know them. If you would rather not read about survival rates, please skip to the next section.

The 4-year survival rate refers to the percentage of children who live at least 4 years after their cancer is diagnosed. Of course, many children live much longer than 4 years (and many are cured).

In order to get 4-year survival rates, doctors have to look at children who were treated at least 4 years ago. Improvements in treatment since then may result in a better outlook for children now being diagnosed with Wilms tumors.

The survival rates below are based on the results of the National Wilms Tumor Studies, which included most of the children treated in the United States in the last few decades. The 2 most important factors in determining a child’s outlook are the stage and histology of the tumor. (The histology refers to how the cancer cells look under the microscope – see “What is Wilms tumor?”) Some of these rates are based on only small numbers of cases, so they might not be accurate.

Survival rates are based on previous outcomes of children who had the disease, but they cannot predict what will happen in any particular child’s case. Knowing the stage and histology of a child’s Wilms tumor are important in estimating their outlook. But other factors may also affect a child’s outlook, such as how well the tumor responds to treatment. Even when taking other factors into account, survival rates are only rough estimates. Your child’s doctor can tell you if the numbers below apply, as he or she is familiar with your child’s situation.

    Wilms Tumor 4-year Survival Rates

 

    Tumor Stage

    Favorable Histology

    Unfavorable Histology (Anaplastic Wilms Tumor)

    I

    99%

    83%

    II

    98%

    81%

    III

    94%

    72%

    IV

    86%

    38%

    V

    87%

    55%


Last Medical Review: 09/17/2013
Last Revised: 02/14/2014