Bone tumours Flashcards
What is osteosarcoma
Most common bone tumour
Extra bone formation (usually metaphysis)
What does osteosarcoma look like on XR
Sun-burst pattern
Where does osteosarcoma usually affect
distal femur, proximal tibia
Osteosarcoma treatment
Chemo and limb salvage
Who get Ewings sarcoma
5-25yr olds
Where does Ewings affect
diaphysis of long bones - distale femur/proximal tibia
What does Ewings look like
Onion skin appearance
A widening of the bone
Treatment and tests for Ewings
Bone biopsy
Chemo and limb salvage +/- adjuvant radio
What is chondrosarcoma
malignancy of chondrocytes
Who and where do you get chondrosarcoma
40-75yr olds
Pelvis, proximal and distal femur
What does chondrosarcoma look like on XR
Moth-eaten pattern or fluffy popcorn calcification
(lytic or blastic lesion with reactive cortical thickening)
What is a osteoid osteoma
Benign painful tumour of long bones
Who and where do you get osteoid osteoma
5-25yrs, long bones
What does osteoid osteoma look like on XR
central nodule of woven bone with osteoblastic rim
Osteoid osteoma buzz word
Pain worse at night - relived by aspirin
