Bone Tumours Flashcards Preview

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Flashcards in Bone Tumours Deck (12):
1

What are the 4 main benign bone tumours?

Osteochondroma
Chondroma (enchondroma)
Osteoid osteoma
Chondroblastoma

2

Describe osteochondroma

Cartilagenous bony projection on external surface of bone, usually near epiphyses, with marrow cavity continuous with original bone
Usually chondrocyte origin

3

Describe chondroma/enchondroma

Hyaline cartilage tumour arising in the medullary cavity

4

Which two developmental disorders are associated with chondroma?

Ollier's disease and Maffuci syndrome

5

Which has the greater risk of malignant transformation - Ollier's disease or Mafucci syndrome?

Mafucci

6

Describe osteoid osteoma

Osteoblastic tumour of neoplastic/infectious origin; appears as a lucent nidus with sclerotic bone

7

List clinical features of osteoid osteoma

Swelling/tenderness
Males, children/young adults
Dull pain at night relieved by NSAID

8

Describe chondroblastoma

Rare cartilagenous tumour within bone, usually epiphyses
Usually teenagers
"chicken-wire calcification"

9

List the 3 main benign + locally aggressive tumours

Giant cell tumour
Osteoblastoma
Chordoma

10

Describe giant cell tumours

Osteoclast-derived tumour of long bones, usually knee
Radiolucent with multinucleated cells
"soap-bubble" appearance on XR

11

List the 3 main malignant bone tumours in order of most common - least common

Osteosarcoma
Chondrosarcoma
Ewing's sarcoma

12

Secondary bone tumours (metastatic) are more common than primary. True/False?

True