This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bone Tumour, Subject name: Orthopaedics
Tumour arising from epiphysis is 
Select and explain. 
A. Osteoclastoma, B. Osteochondroma, C. Osteoid osteoma, D. Enchondroma
A: Osteoclastoma
Answer: A: Osteoclastoma 
Explanation: Ans: a (Osteoclastoma) Ref: Maheshwari, (rev) ed, p. 216Osteoclastoma is located at the epiphysis. Usually seen after epiphyseal fusion, by 20-40 yrsSites: Lower end of femur > upper end of tibiaBony lesions with site of originMetaphysisDiaphysisEpiphysisOsteosarcomaOsteomyelitisBrodie's abscessEwings sarcomaOsteoid osteomaMultiple myelomaSecondariesLymphomaOsteoclastomaChondroblastoma