Most common site of Ewing's sarcoma -: (A) Upper end of tibia, (B) Shaft of tibia, (C) Lower end of femur, (D) Shaft of femur
Answer is D. Ans. is 'd' i.e., Shaft of femur Commonest siteo Ivory osteoma-Frontal sinuso Osteoid osteoma-Tibiao Admantinoma (Ameloblastoma)-Mandibleo Chordoma-Sacrum and cervical spineo Osteoclastoma-Lower end of femuro Ewing's sarcoma-Femur diaphysis > tibia diaphysiso Osteosarcoma-Distal femur (45%), Proximal tibia (25%)o Simple bone cyst-Proximal humeruso Aneurysmal bone cyst-Bones around knee (Femur, tibia)o Osteochondroma-Bones around knee (distal femur > proximal tibia)o Fibrous dysplasia-Proximal femur > Tibiao Enchondroma-Phalanges of hando Multiple myeloma-Vertebraeo Metastasis-Vertebrae