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
[{'content': 'Osteomyelitis can mimic which tumor? \nSelect and explain. \nA. Osteoclastoma, B. Ewing sarcoma, C. Chondroma, D. None of above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Ewing Sarcoma Distinguishing between hematogenous osteomyelitis and a bone sarcoma is difficult when there is notrauma, no systemicdisease, and no sign of infection locally . Radiographic changes of soft tissue swelling, coical tunneling, focal cancellouslysis, focal coical resorption, and a periosteal reaction in osteomyelitis are often mistaken fbumors, and Ewing sarcoma is usually associated with fever", 'role': 'assistant'}]