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
Following the given X Ray most probable diagnosis is ? 
Select and explain. 
A. Ewing sarcoma, B. Giant cell Tumor, C. Osteosarcoma, D. Aneurysmal Bone cyst
B: Giant cell Tumor
Answer: B: Giant cell Tumor 
Explanation: * 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)