Epiphyseal origin tumour is: (A) Osteo claustoma, (B) Osteogenic sarcoma, (C) Ewing's sarcoma, (D) Osteo blastoma
Answer is A. (Osteoclaustoma) (181 - Apley's 8th)* Ewing's sarcoma - is believed to arise from endothelial cells / Diaphysis* Osteogenic sarcoma - Metaphysis* Chondrosarcoma - Any where in the bone* Osteoclaustoma & Chondroblastoma - Epiphysis* Osteoblastoma - diaphysis or metaphysis* Giant cell tumour (oslcoclaustoma) is a lesion of uncertain origin* that appears in mature bone