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: Surgery
Which bone tumour arises from an area around epiphyseal plate: March 2011 
Select and explain. 
A. Osteosarcoma, B. Ewings sarcoma, C. Chondroblastoma, D. Chondromyxoid fibroma
C: Chondroblastoma
Answer: C: Chondroblastoma 
Explanation: Ans. C: Chondroblastoma Chondroblastoma is a cailaginous tumour containing characteristic multiple calcium deposits It occurs in young adults and is located around the epiphyseal plate Bone tumours: Benign tumours of cailage origin: - Chondromyxoid fibroma Benign tumours of bone origin: - Osteoid osteoma - Osteoblastoma Chordoma is a malignant tumour of: Notochordal origin Epiphyseal: Osteoclastoma (giant cell tumour)