This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pathology
[{'content': 'MC tumors of kidney in children? \nSelect and explain. \nA. Wilms tumor, B. Neuroblastoma, C. PCKD, D. Angioliposarcoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Wilms tumor(Ref: Nelson 20th ed/ pg 2466-68)Wilms tumor (WT), also known as nephroblastoma, is the most common primary malignant renal tumor of childhood; It is the second most common malignant abdominal tumor in childhood. The most common sites of metastases are the lungs, regional lymph nodes, and liver.', 'role': 'assistant'}]