Which is the commonest true benign bone tumor?
Osteoid osteoma
Hemangioma
Osteochondroma
Enchondroma
Ans. is 'a' i.e.. Osteoid osteoma Important factso Commonest bone malignancieso Commonest primary' malignant tumoro Commonest primary malignant tumor of long bones---SecondariesMultiple myelomaOsteosarcomao Commonest benign tumor of bone-Osteochondroma(Osteochondroma is not true neoplasm since its growth stops with cessation of growth at the epiphyseal plate)o Commonest true benign tumor of bone-Osteoid osteomao Commonest benign tumor of hand-EnchondromaCommonest siteo Ivory osteoma-Frontal sinuso Osteoid osteoma-Tibiaa Admantinoma (Ameloblastoma)-Mandibleo Chordoma-Sacrum and cervical spineo Osteoclastoma-Lowrer 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 dysplasiao Enchondroma--Proximal femur > Tibia\Phalanges of hando Multiple myeloma-Vertebraeo Metastasis-Vertebrae
Osseous Origin Bone Tumors