Bone Tumours

Question 1

Bone forming benign tumour?

Answer 1

Osteoma

Question 2

Cartilage forming benign tumour?

Answer 2

Osteochondroma

Question 3

Bone forming malignant?

Answer 3

Osteosarcoma

Question 4

Cartilage forming malignant?

Answer 4

Chondrosarcoma

Question 5

Vascular malignant?

Answer 5

Angiosarcoma

Question 6

Typical case presentation?

Answer 6

Patient presents with pain in the leg that is worse at night and noticable at rest. O/e a mass is noted just above the knee.

OR

Patient normally healthy presents with a broken femur following a blow on the side of a table.

Question 7

Investigation?

Answer 7

X ray
MRI
CT scan

Question 8

What may be seen on the X ray in an osteosarcoma?

Answer 8

Codmans triangle

Sunburst

Question 9

What may be seen on MRI?

Answer 9

Clear zone between normal bone and inflammatory bone

Question 10

What may be seen in Ewing’s sarcoma?

Answer 10

Onion skin appearance

Question 11

What is a CT used for?

Answer 11

Staging

Question 12

What can be done to assess malignancy?

Answer 12

Isotope bone scan

Question 13

What investigation is done last?

Answer 13

Biopsy

Question 14

Treatment?

Answer 14

Chemotherapy
Radiotherapy
Prophylactic fixation

Question 15

What is prophylactic fixation based on?

Answer 15

Mirel’s score (risk of pathological fracture)

Question 16

What are the 4 principles of mirel’s score?

Answer 16

Site

Pain

Lytic vs blastic

Size

Question 17

What score indicates prophylactic fixation?

Answer 17

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