Wilms tumor most commonly occurs in which age group?

Wilms tumor most commonly occurs in which age group?

• A. Under 1 year
• B. 1 to 5 years
• C. 6 to 12 years
• D. Over 12 years

Answer: (B)

Wilms tumor is the most common kidney cancer in children and has its peak in early childhood. The vast majority of cases occur before age 5, with many around ages 2 to 3. Therefore, the age range that captures the typical presentation is the 1 to 5 years window. This timing helps distinguish Wilms tumor from other renal tumors that occur later and from adult kidney cancers. A classic clue is a painless, firm abdominal mass, often unilateral, sometimes with hypertension.

Wilms tumor is the most common kidney cancer in children and has its peak in early childhood. The vast majority of cases occur before age 5, with many around ages 2 to 3. Therefore, the age range that captures the typical presentation is the 1 to 5 years window. This timing helps distinguish Wilms tumor from other renal tumors that occur later and from adult kidney cancers. A classic clue is a painless, firm abdominal mass, often unilateral, sometimes with hypertension.