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': 'Following the given X Ray most probable diagnosis is ? \nSelect and explain. \nA. Ewing sarcoma, B. Giant cell Tumor, C. Osteosarcoma, D. Aneurysmal Bone cyst', 'role': 'user'}, {'content': 'Answer: B \nExplanation: * Giant cell tumor - It goes till the joint. It is the only tumor to involve the joint. It is seen in 20-40 years of age (after skeletal maturity). It occurs in epiphysis (mainly) and extends into metaphysis, so called as epiphyseal-metaphysis tumor * Osteosarcoma - aggressive presentation and found in metaphysis. * Giant cell tumor-Osteoclastoma. * ABC - It occurs in metaphysis and seen in skeletally immature individuals (11-20 years)', 'role': 'assistant'}]