Wilms' tumor is a type of malignant tumor

There are no known ways to prevent a Wilms' tumor, although it is important that children with birth defects associated with Wilms' tumor be carefully monitored.

Wilms' tumor occurs almost exclusively in young children

Wilms tumor is a cancerous tumor (noninfectious). It is a leading cause of cancer in young children, affecting the kidney and its development.

In the United States, treatment for Wilms' tumor almost always begins with surgery to remove or decrease the size of the kidney tumor.