What is the typical age range for peak incidence of Wilms' tumor?

Wilms' tumor, also known as nephroblastoma, is a common type of kidney cancer that primarily affects children. The typical age range for peak incidence is indeed between 1 to 5 years. Most children diagnosed with Wilms' tumor fall into this age group, with the majority being diagnosed around the age of 3 or 4. This specific age range corresponds to when nephrogenic cells are most active and the likelihood of developing this tumor is highest.

The peak incidence aligns with the developmental stages of children, where rapid cell growth could contribute to tumor formation. Understanding this age range is crucial for early detection and management. Children outside this age range are much less likely to be diagnosed with Wilms' tumor, which is why recognition of the typical incidence peaks during the early childhood years is significant in pediatric healthcare practices.