What are the 4 main benign bone tumours?
Cartilagenous bony projection on external surface of bone, usually near epiphyses, with marrow cavity continuous with original bone
Usually chondrocyte origin
Hyaline cartilage tumour arising in the medullary cavity
Which two developmental disorders are associated with chondroma?
Ollier’s disease and Maffuci syndrome
Which has the greater risk of malignant transformation - Ollier’s disease or Mafucci syndrome?
Describe osteoid osteoma
Osteoblastic tumour of neoplastic/infectious origin; appears as a lucent nidus with sclerotic bone
List clinical features of osteoid osteoma
Males, children/young adults
Dull pain at night relieved by NSAID
Rare cartilagenous tumour within bone, usually epiphyses
List the 3 main benign + locally aggressive tumours
Giant cell tumour
Describe giant cell tumours
Osteoclast-derived tumour of long bones, usually knee
Radiolucent with multinucleated cells
“soap-bubble” appearance on XR
List the 3 main malignant bone tumours in order of most common - least common
Secondary bone tumours (metastatic) are more common than primary. True/False?