Bone Tumours

Question 1

what are the four main benign bone tumours?

Answer 1

osteochondroma
(en)chondroma
osteoid osteoma
chondroblastoma

Question 2

describe osteochondroma

Answer 2

cartilaginous bony projection near epiphysis

marrow cavity continuous with original bone

Question 3

describe enchondroma

Answer 3

hyaline cartilage tumour arising in the medullary cavity

Question 4

which two developmental disorders are associated with chondroma?

Answer 4

ollier’s disease

maffuci syndrome

Question 5

which has greater risk of malignant transformation - ollier’s or Mafucci?

Answer 5

Mafucci

Question 6

describe osteoid osteoma

Answer 6

osteoblastic tumour of neoplastic or infectious origin

appears as a lucent nidus with sclerotic bone

Question 7

list three clinical features of osteoid osteoma

Answer 7

swelling and tenderness
young males
pain at night relieved by NSAIDs

Question 8

describe chondroblastoma

Answer 8

cartilaginous tumour within bone

usually affects teenagers

Question 9

list the three main benign yet locally aggressive tumours

Answer 9

giant cell tumour
osteoblastoma
chordoma

Question 10

describe giant cell tumours

Answer 10

osteoclast derived tumour of long bone

radiolucent with multinucleated cells

Question 11

list the three main malignant bone tumours in order from most to least common

Answer 11

osteosarcoma
chondrosarcoma
ewing’s sarcoma

Question 12

true or false: secondary bone tumours are more common than primary bone tumours

Answer 12

true