Lecture7: Classification Of Neoplasia

Question 1

Cartilage forming bone tumours contain?

Answer 1

Chondroma

Question 2

Bone forming tumours contain?

Answer 2

Oma

Question 3

Enumerate differences between Osteod osteoma and osteoblastoma?

Answer 3

Osteoblastoma bigger than 2cm, doesn’t respond to aspirin, and in the posterior vertebrae

Question 4

What causes the pain in osteoid osteoma?

Answer 4

Prostaglandin E2 secreted by osteoblasts

Question 5

What is the malignant bone forming tumour?

Answer 5

Osteosarcoma

Question 6

Give examples of predisposing factors of osteosarcoma in adults?

Answer 6

Radiation or bone infarcts

Question 7

What are osteosarcomas initially presenting as?

Answer 7

Pathologic fracture

Question 8

What do osteosarcomas present as when developed?

Answer 8

A large progressive mass

Question 9

Radiologically, what can we see in osteosarcoma?

Answer 9

Codmann’s triangle

Question 10

What is the definitive feature of osteosarcoma?

Answer 10

Osteoid matrix

Question 11

Which bone forming tumor spreads to the lungs?

Answer 11

Osteosarcoma

Question 12

Osteochondroma are most common in? Gender

Answer 12

Males

Question 13

What does osteochondroma arise from?

Answer 13

Metaphysis of long tubular bones

Question 14

Why are osteochondromas detected accidentally?

Answer 14

They don’t produce pain, but they would if they nicked a nerve for example

Question 15

What do osteochondromas look like visually?

Answer 15

A protrusion from the bone

Question 16

What do osteochondromas look like visually?

Answer 16

Protrusion from the bone

Question 17

Where are chondromas usually found?

Answer 17

The hands and feet

Question 18

Which age group are Ewing Sarcomas’ usually found in?

Answer 18

The youngest (-20)

Question 19

Where are Ewing Sarcomas found?

Answer 19

The diaphysis of long bones

Question 20

What do Ewing sarcomas look like?

Answer 20

Onion-skin like and painful

Question 21

How are Ewing Sarcomas treated?

Answer 21

Chemotherapy followed by surgical excision

Question 22

Which age group are Giant Cell tumours exclusive to?

Answer 22

Adults

Question 23

Where are Giant Cell tumours found?

Answer 23

Distal femur and proximal tibia