This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ohopedics Oncology, Subject name: Orthopaedics
[{'content': "Sun burst appearance of skull not seen in \nSelect and explain. \nA. Paget's disease, B. Osteosarcoma, C. Metastasis due to neuroblastoma, D. Hemangioma", 'role': 'user'}, {'content': "Answer: A \nExplanation: Sun burst appearance: Osteosarcoma Ewing's sarcoma Metastasis of prostate, breast cancer Neuroblastoma Hemangioma Meningioma Paget's disease-cotton wool skull ,osteoporosis circumscripta", 'role': 'assistant'}]