Which statement is true about Wilms tumor?

Which statement is true about Wilms tumor?

• A. It is a liver tumor
• B. It is a kidney tumor
• C. It is contagious
• D. It resolves with no treatment

Answer: (B)

Wilms tumor is a kidney tumor (nephroblastoma) that arises from immature kidney tissue, which is why the true statement is that it involves the kidney. It is not a liver tumor, and it is not contagious. It does not resolve on its own; treatment is needed, typically starting with surgical removal of the tumor (or the affected kidney) followed by chemotherapy and sometimes radiation, depending on the stage. Recognizing that it presents in children as a firm abdominal mass (often crossing the midline) with possible hypertension helps distinguish it from other conditions.

Wilms tumor is a kidney tumor (nephroblastoma) that arises from immature kidney tissue, which is why the true statement is that it involves the kidney. It is not a liver tumor, and it is not contagious. It does not resolve on its own; treatment is needed, typically starting with surgical removal of the tumor (or the affected kidney) followed by chemotherapy and sometimes radiation, depending on the stage. Recognizing that it presents in children as a firm abdominal mass (often crossing the midline) with possible hypertension helps distinguish it from other conditions.