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Flashcards in Malignant bone tumours Deck (14):
1

what group of people do osteosarcomas occur in

young adults 60% are under 25
older patients have predisposing factors
M>F

2

what is produced in osteosarcoma

malignant osteoclasts form osteoid

3

where does osteosarcoma occur

at the end of long bones

4

what does osteosarcoma present like

grows out of bone, raising bony capsule - runs over the surface
erodes and destroys bony cortex and extends into soft tissue

5

codmans triangle

raised triangle on x-ray

6

what are the variants of osteosarcoma

osteoblastic, chordoblastic, fibroblastic

7

what are the investigations for osteosarcoma and the treatment

biopsy, CT for mets
pre op chemo
surgical resection
post op chemo

8

large and slow to metastasis

chondrosarcoma

9

malignant nodules - finger like processes infiltrate lamellar bone obliterating marrow - separation of nodules by fibrous bands

chondrosarcoma

10

exhibits pure hyaline differentiation

chondrosarcoma

11

Who does ewings sarcoma occur in

10-20s

12

malignant primary bone tumour of the endothelial cells of the marrow

ewings sarcoma

13

what is the presentation of ewings sarcoma

great mimic - hot swollen tender joint w raised inflame markers

14

red brown tumour mass breaking through cortex

ewings sarcoma