This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Childhood tumors, Subject name: Pediatrics
[{'content': "A 4 years old girl presented with abdominal lump. Bone scan is needed in ___________ \nSelect and explain. \nA. Wilm's tumor, B. Neuroblastoma, C. Rhabdomyosarcoma, D. PNET", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Neuroblastoma is the most common intra-abdominal solid tumor in children.The patient can present with an abdominal lump.Metastasis occurs in 60-70% children,usually to the skeleton(facial bones,skull),bone marrow.Therefore bone scan is needed in this case. Reference:Essential pediatrics-Ghai,8th edition,page no:616,617.', 'role': 'assistant'}]