What are the key statistics about Wilms tumor?
Each year, about 500 new cases of Wilms tumors are diagnosed in the United States. This number has been fairly stable for many years. About 5% of all cancers in children are Wilms tumors.
Wilms tumors tend to occur in young children. The average age at diagnosis is about 3 to 4 years. It becomes less common as children grow older and is uncommon after age 6. It is very rare in adults, although cases have been reported.
Statistics related to survival for Wilms tumors are discussed in the section, “Survival rates for Wilms tumor by stage and histology.”
Last Medical Review: 07/27/2012
Last Revised: 01/17/2013