This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Most common malignancy in children is – 
Select and explain. 
A. Leukemia, B. Lymphoma, C. Wilm's tumor, D. Neuroblastoma
A: Leukemia
Answer: A: Leukemia 
Explanation: Most common childhood tumor → Leukaemia
Most common childhood leukemia → ALL
Most common solid tumor of childhood → Brain tumor
Most common tumor in infancy → Neuroblastoma
Most common abdominal tumor in child → Neuroblastoma