Bone tumours

Question 1

What is the most common bone tumour?

Answer 1

Bony mets
Tend to be from BLT + KP sauce
B - Breast
L - Lung
T - Thyroid
K - Kidneys
P - Prostate
*Most lytic lesions except prostate which is sclerotic*

Question 2

How do bony mets present?

Answer 2

Pain
Pathological fracture
Usually in axial skeleton

Question 3

What is an osteochondroma?

Answer 3

Commonest benign bone tumour
Cartilage capped bony projections develop on the surface of bones esp the knee. May be due to previous trauma
Happens in 10-20s

Question 4

What is a chondrosarcoma?

Answer 4

Malignant neoplasm of the cartilage
Pain + lump develop, usually in p’s >40
Can arise from chondromas
On X-ray - lytic lesion with a fluffy ‘Popcorn calcification’

Question 5

What is an osteosarcoma?

Answer 5

Most common primary bone malignancy
Malignant tumour of bone
Usually in adolescents
Pain, warm, bruit over metaphyisis
On x-ray see periosteal reaction of sunburst appearance, codman's triangle

Question 6

What is an Ewing’s sarcoma?

Answer 6

Malignant tumour of bone

Usually