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

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.